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Dayang Chem (Hangzhou) Co.,Ltd.

As a leading manufacturer and supplier of chemicals in China, DayangChem not only supply popular chemicals, but also DayangChem's R&D center offer custom synthesis services. DayangChem can provide different quantities of custom synthesis ch

Selenium Manufacturer/High quality/Best price/In stock

Cas:7782-49-2

Min.Order:1 Kilogram

FOB Price: $3.0

Type:Lab/Research institutions

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Ality Chemical Corporation

The above product is Ality Chemical's strong item with best price, good quality and fast supply. Ality Chemical has been focusing on the research and production of this field for over 14 years. At the same time, we are always committed to providi

Factory Supply Selenium Powder

Cas:7782-49-2

Min.Order:1

Negotiable

Type:Other

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Chemwill Asia Co., Ltd.

Our main production base is located in Xuzhou industry park. We are certified both to the ISO 9001 and ISO 14001 Standards, have a safety management system in place.Our R&D team masters core technology for process-design of target building block

Selenium

Cas:7782-49-2

Min.Order:5 Kiloliter

FOB Price: $1.2 / 5.0

Type:Manufacturers

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LIDE PHARMACEUTICALS LIMITED

Advantage : LIDE PHARMACEUTICALS LTD. is a mid-small manufacturing-type enterprise, engaged in pharmaceutical intermediates of R&D, custom-made and production, and also involving trading chemicals for export. We have established the R&amp

Selenium / LIDE PHARMA- Factory supply / Best price

Cas:7782-49-2

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

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Henan Tianfu Chemical Co., Ltd.

Selenium Basic information Product Name: Selenium Synonyms: VANDEX;YEAST BOUND SELENIUM;WIENINGERS REAGENT;WIENINGER'S REAGENT;SELENIUM SINGLE ELEMENT STANDARD;SELENIUM STANDARD;SELE

SeleniuM

Cas:7782-49-2

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

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Henan Sinotech Import&Export Corporation

Molecular Formula: Se   C.A.S No.: 7782-49-2   Property: black gray or purplish red metalloid, soluble inconcentrated sulfuric acid and trichloromethane, and insoluble in water and ethanol.   Application: used as glass, ceramic and feed additi

Selenium

Cas:7782-49-2

Min.Order:5 Metric Ton

FOB Price: $1.0 / 2.0

Type:Other

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Changchun Artel lmport and Export trade company

Product Detail Minimum Order Qty. 10 Gram

Selenium CAS NO.7782-49-2

Cas:7782-49-2

Min.Order:10 Gram

Negotiable

Type:Trading Company

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Henan Wentao Chemical Product Co., Ltd.

Henan Wentao Chemical Product Co.,Ltd is Located in Zhengzhou High-tech Development Zone with import and export license, We passed ISO 9001:2008 as well, Henan Wentao has developed more than 1000 compounds, which are widely used in the fields of prod

CAS NO.:7782-49-2

Cas:7782-49-2

Min.Order:0

Negotiable

Type:Lab/Research institutions

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Hangzhou Keyingchem Co.,Ltd

Hangzhou KeyingChem Co., Ltd. exported this product to many countries and regions at best price. If you are looking for the material’s manufacturer or supplier in China, KeyingChem is your best choice. Pls contact with us freely for getting det

Selenium

Cas:7782-49-2

Min.Order:0 Metric Ton

Negotiable

Type:Lab/Research institutions

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Hangzhou J&H Chemical Co., Ltd.

J&H CHEM R&D center can offer custom synthesis according to the contract research and development services for the fine chemicals, pharmaceutical, biotechnique and some of the other chemicals. J&H CHEM has some Manufacturing base in Jia

SELENIUM

Cas:7782-49-2

Min.Order:0

Negotiable

Type:Lab/Research institutions

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Shanghai Massive Chemical Technology Co., Ltd.

Massive Chemical is certified with ISO9001 and ISO14001 manufacturer for this product. We will offer all documents as requirement for the materials which includes, Certificate of Analysis, Material Safety Data Sheet, and Method of Analysis and

Selenium

Cas:7782-49-2

Min.Order:1 Gram

FOB Price: $1.0

Type:Lab/Research institutions

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Zibo Hangyu Biotechnology Development Co., Ltd

Zibo Hangyu Biotechnology Development Co., Ltd is a leading manufacturer and supplier of chemicals in China. We develop produce and distribute high quality pharmaceuticals, intermediates, special chemicals and OLED intermediates and other fine chemi

High quality selenium

Cas:7782-49-2

Min.Order:10 Gram

FOB Price: $100.0

Type:Lab/Research institutions

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HANGZHOU YUNUO CHEMICAL CO.,LTD

Superior quality, moderate price & quick delivery. Appearance:dark grey to dark red powder or crystals Storage:Stored in cool, dry and ventilation place; Away from fire and heat Package:1kg/bag, 1kg/drum or 25kg/drum or as per your request. Ap

Selenium

Cas:7782-49-2

Min.Order:1 Kilogram

Negotiable

Type:Trading Company

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Zibo Dorne chemical technology co. LTD

Product Details Grade: pharmaceutical grade Purity:99%+ ProductionCapacity: 1000 Kilogram/Month Scope of use: For scientific research only(The product must be used legally) Our Advantage 1. Best quality with competitive price. 2. Quick shipping,

Selenium Manufacturer

Cas:7782-49-2

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

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Hunan chemfish Pharmaceutical co.,Ltd

Appearance:95%+ Package:R&D,Pilot run Transportation:per client require Port:Express ,Air, Sea

Selenium

Cas:7782-49-2

Min.Order:0

Negotiable

Type:Manufacturers

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Kono Chem Co.,Ltd

high purity lowest priceAppearance:solid or liquid Storage:in sealed air resistant place Package:drum and bag Application:for pharma use Transportation:by sea or air Port:Beijing or Guangzhou

Selenium

Cas:7782-49-2

Min.Order:0

Negotiable

Type:Other

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Henan Allgreen Chemical Co.,Ltd

high quality Storage:Sealed, dry, microtherm , avoid light and smell. Package:According to the demand of customer Application:Organic synthesis Transportation:by air or by sea

Selenium

Cas:7782-49-2

Min.Order:0

Negotiable

Type:Manufacturers

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Aecochem Corp.

Our clients, like BASF,CHEMO,Brenntag,ASR,Evonik,Merck and etc.Appearance:COA Storage:in stock Application:MSDS/TDS

Selenium Powder

Cas:7782-49-2

Min.Order:0

Negotiable

Type:Manufacturers

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Zhuozhou Wenxi import and Export Co., Ltd

Product Description Description & Specification Category Pharmaceutical Raw Materials, Fine Chemicals, Bulk drug Standard Medical standard

factory directly supply CAS 7782-49-2 with competitive price

Cas:7782-49-2

Min.Order:1 Kilogram

FOB Price: $112.0

Type:Trading Company

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Antimex Chemical Limied

Ansciep Chemical is a professional enterprise manufacturing and distributing fine chemicals and speciality chemicals. We have been dedicated to heterocycle compounds and phenyl rings for tens of years. This is our mature product for export. Our quali

Selenium

Cas:7782-49-2

Min.Order:0

Negotiable

Type:Lab/Research institutions

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Hangzhou Ocean Chemical Co., Ltd.

Ocean inorganic department is a professional supplier and exporter engaging in inorganic chemical materials and metal organic compounds. Over the past years, our company is committed to improving the product quality and developing new products, in or

Selenium

Cas:7782-49-2

Min.Order:0

Negotiable

Type:Lab/Research institutions

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Xiamen AmoyChem Co.,Ltd

Amoychem is committed to providing the top-quality chemical products and services Internationally. We offer our customers with friendly, professional service and reliable, high performance products that have been manufactured according to the accredi

Selenium Powder

Cas:7782-49-2

Min.Order:0

Negotiable

Type:Other

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Luyunjia Chemistry Xiamen Limited

Xiamen Luyunjia Trading Co.,Ltd Package:1kg/bag; 4708kg/drum, or as customer's request. Application:Xiamen Luyunjia Trading Co.,Ltd Transportation:DHL, EMS, FedEx, TNT, AIR, SEA Port:Beijing,Shanghai,Guangzhou ,China main port

SELENIUM, POWDER

Cas:7782-49-2

Min.Order:0

Negotiable

Type:Lab/Research institutions

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Hunan Russell Chemicals Technology Co.,Ltd

high purity lowest priceAppearance:solid or liquid Storage:in sealed air resistant place Package:Foil bag; Drum; Plastic bottle Application:Pharma;Industry;Agricultural Transportation:by sea or air Port:any port in China

Selenium 7782-49-2

Cas:7782-49-2

Min.Order:0

Negotiable

Type:Trading Company

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Beantown Chemical

in stock Application:7782-49-2

Selenium shot, amorphous, 2-6mm, 99.999% trace metals basis

Cas:7782-49-2

Min.Order:0

Negotiable

Type:Trading Company

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HWRK Chem

in store Package:50g Application:Organic Chemicals

Selenium

Cas:7782-49-2

Min.Order:0

Negotiable

Type:Trading Company

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Kaiyada material

Selenium (Se) Advantage : Oxygen-free Selenium 1,Purity:5N(99.999%) ;6N(99.9999%); 2,Technic: Rectification - Second rectification; 3,Analysis :ICP-MS or GDMS (5N’s standard :All impurity elements is below 10ppm); 4,Particle Size :

HangZhou Kai Yada 99.99%Selenium (Se)

Cas:7782-49-2

Min.Order:1 Kilogram

FOB Price: $40.0 / 60.0

Type:Manufacturers

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HENAN SUNLAKE ENTERPRISE CORPORATION

Selenium Basic information Product Name: Selenium Synonyms: VANDEX;YEAST BOUND SELENIUM;WIENINGERS REAGENT;WIENINGER'S REAGENT;SELENIUM SINGLE ELEMENT STANDARD;SELENI

Selenium

Cas:7782-49-2

Min.Order:1 Kilogram

Negotiable

Type:Trading Company

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Shaanxi Mingqi Chemical Co., Ltd

Known for its best quality and competitve price, this chemicals we offered is widely appreciated by our customers. Our advantages: 1, High quality with competitive price: 1) Standard:BP/USP/EP/Enterprise standard 2) All Purity≥99% 3)

Manufacturer Supply AR 98% Selenium in stock

Cas:7782-49-2

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

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Wuhan Xinrong New Material

Cost We have lower cost as we are manufacturer Quality We have professional R&D team. For example, customer speak highly of our product-Tellurium 7 N-World first clas

Cheap Selenium(powder/pellet/oxide) on sale, 4n to 6n

Cas:7782-49-2

Min.Order:1 Kilogram

FOB Price: $50.0

Type:Manufacturers

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Synthetic route

selenious acid
7783-00-8

selenious acid

selenium
7782-49-2

selenium

Conditions
ConditionsYield
With ascorbic acid In H2O byproducts: dehydroascorbic acid, H2O; selenium nanoparticles obtained by redn. of selenous acid with ascorbic acid; gravimetric anal.;96%
In water Electrolysis; <30°C; steel cathode covered by amorphous Se;
pptn. of Se by reducing agents;;
(pentamethylcyclopentadienyl)Ir(trimethylphosphane)Cl2

(pentamethylcyclopentadienyl)Ir(trimethylphosphane)Cl2

(NEt4)2Se6

(NEt4)2Se6

A

selenium
7782-49-2

selenium

B

(pentamethylcyclopentadienyl)(cyclo-tetraselenido)(trimethylphosphane)iridium

(pentamethylcyclopentadienyl)(cyclo-tetraselenido)(trimethylphosphane)iridium

Conditions
ConditionsYield
In N,N-dimethyl-formamide (Ar), treated dropwise with stirring, stirred for 16 h; filtered, concentrated, column chromatography on silica gel (pentane/CH2Cl2 (1:2)), recrystallized from hexane/chloroform at -25°C, elem. anal.;A n/a
B 92%
titanocene pentaselenide
12307-22-1

titanocene pentaselenide

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

A

selenium
7782-49-2

selenium

B

[(C5H5)2TiSe2C2(CO2CH3)2]
82865-10-9

[(C5H5)2TiSe2C2(CO2CH3)2]

Conditions
ConditionsYield
In xylene under N2, xylene soln. of Ti complex and dimethyl acetylenedicarboxylate refluxed for 0.5 h; cooled, filtered, Se washed with CH2Cl2, filtrate evapd. to oil, dissolved in small amt. of CH2Cl2, chromd., diluted with CH2Cl2, concd. in vac., cooled at -20°C, filtered;A n/a
B 90%
In 1,2-dichloro-ethane Kinetics; under N2, soln. of Ti complex in 1,2-dichloroethane refluxed for 0.5 h,dimethyl acetylenedicarboxylate added to refluxing soln.; progress react. monitored by removing aliquots and recording visible spectrum, cooled soln. filtered, filtrate evapd. to dryness in high vac., residue dissolved in CH2Cl2, diluted with hexane, concd.;A n/a
B 77%
selenic acid
7783-08-6

selenic acid

selenium
7782-49-2

selenium

Conditions
ConditionsYield
With sulfuric acid; potassium iodide In sulfuric acid byproducts: I2; sepn. of the formed I2 by distn.;;87.8%
With sulfuric acid; potassium iodide In sulfuric acid byproducts: I2, H2O; storage at room temperature for 4 weeks;;38.4%
With sodium hypophosphite In water heating for a longer period of time;;>99
bis(4-methoxyphenyl)selenide
22216-66-6

bis(4-methoxyphenyl)selenide

A

selenium
7782-49-2

selenium

B

bis(4-methoxyphenyl)diselenide
38762-70-8

bis(4-methoxyphenyl)diselenide

C

methoxybenzene
100-66-3

methoxybenzene

Conditions
ConditionsYield
With hydrogen iodide In chloroform; water at 60℃; for 6h;A 22%
B 34 %Chromat.
C 41.3 %Chromat.
bis(4-methoxyphenyl)selenide
22216-66-6

bis(4-methoxyphenyl)selenide

A

selenium
7782-49-2

selenium

B

4-(4-hydroxyphenylselanyl)phenol
141982-42-5

4-(4-hydroxyphenylselanyl)phenol

C

1,2-bis(4-hydroxyphenyl)diselane
835629-63-5

1,2-bis(4-hydroxyphenyl)diselane

D

phenol
108-95-2

phenol

Conditions
ConditionsYield
With pyridine hydrochloride at 200℃; for 0.833333h;A 16%
B n/a
C n/a
D n/a
disodium diselenide

disodium diselenide

1,2,3,4,5-pentafluoro-6-iodobenzene
827-15-6

1,2,3,4,5-pentafluoro-6-iodobenzene

mercury

mercury

A

selenium
7782-49-2

selenium

B

bis(pentafluorophenylseleno)mercury
20331-75-3

bis(pentafluorophenylseleno)mercury

Conditions
ConditionsYield
In further solvent(s) byproducts: (C6F5)2Se; Irradiation (UV/VIS); glyme;A n/a
B 15%
In ammonia byproducts: (C6F5)2Se; Irradiation (UV/VIS); N2 atm.; -35°C, 2-72, evapn., extraction (CCl3F), evapn., sublimation, addn. of Hg, stirring (2 d); filtn., washing (CCl3F), extraction (CHCl3), recrystn. (CHCl3);A n/a
B 2.4%
In neat (no solvent) byproducts: (C6F5)2Se; Irradiation (UV/VIS);A n/a
B 2%
In ammonia byproducts: (C6F5)2Se; N2 atm.; -35°C, 20 min, evapn., extraction (CCl3F), evapn., sublimation, addn. of Hg, stirring (2 d); filtn., washing (CCl3F), extraction (CHCl3), recrystn. (CHCl3);A n/a
B 2.7%
disodium diselenide

disodium diselenide

bromopentafluorobenzene
344-04-7

bromopentafluorobenzene

mercury

mercury

A

selenium
7782-49-2

selenium

B

bis(pentafluorophenylseleno)mercury
20331-75-3

bis(pentafluorophenylseleno)mercury

Conditions
ConditionsYield
In ammonia byproducts: (C6F5)2Se; N2 atm.; -35°C, 20 min, evapn., extraction (CCl3F), evapn., sublimation, addn. of Hg, stirring (2 d); filtn., washing (CCl3F), extraction (CHCl3), recrystn. (CHCl3);A n/a
B 12.2%
sodium selenide

sodium selenide

bromopentafluorobenzene
344-04-7

bromopentafluorobenzene

mercury

mercury

A

selenium
7782-49-2

selenium

B

bis(pentafluorophenylseleno)mercury
20331-75-3

bis(pentafluorophenylseleno)mercury

Conditions
ConditionsYield
In tetrahydrofuran byproducts: (C6F5)2Se; Irradiation (UV/VIS); N2 atm.; -40 to 60°C, 3-4 h, evapn., stirring (12 h, 20°C), filtn., evapn., sublimation (vac.), addn. of Hg, stirring (2 d, 20°C); filtn., washing (CCl3F), extraction (CHCl3), recrystn. (CHCl3);A n/a
B 9.1%
triphenylstibine oxide * selenium dioxide

triphenylstibine oxide * selenium dioxide

triphenylantimony
603-36-1

triphenylantimony

selenium
7782-49-2

selenium

Conditions
ConditionsYield
In not given boiling for 50 h;1%
sodium selenide

sodium selenide

1,2,3,4,5-pentafluoro-6-iodobenzene
827-15-6

1,2,3,4,5-pentafluoro-6-iodobenzene

mercury

mercury

A

selenium
7782-49-2

selenium

B

bis(pentafluorophenylseleno)mercury
20331-75-3

bis(pentafluorophenylseleno)mercury

Conditions
ConditionsYield
In tetrahydrofuran byproducts: (C6F5)2Se; Irradiation (UV/VIS); N2 atm.; -40 to 60°C, 3-18 h, stirring (12 h, 20°C), filtn., evapn., sublimation, addn. of Hg, stirring (2 d); filtn., washing (CCl3F), extraction (CHCl3), recrystn. (CHCl3);A n/a
B 0.5%
In tetrahydrofuran byproducts: (C6F5)2Se; N2 atm.; 20°C, 20 min, stirring (12 h, 20°C), filtn., evapn., sublimation, addn. of Hg, stirring (2 d, 20°C); filtn., washing (CCl3F), extraction (CHCl3), recrystn. (CHCl3);A n/a
B 0.6%
potassium carbonate
584-08-7

potassium carbonate

diselenium dichloride
10025-68-0

diselenium dichloride

A

selenium
7782-49-2

selenium

B

potassium chloride

potassium chloride

C

selenium oxychloride
7791-23-3

selenium oxychloride

Conditions
ConditionsYield
In melt byproducts: CO2;
In neat (no solvent) byproducts: CO2; Se2Cl2 and anhyd. K2CO3;;
In melt byproducts: CO2;
In neat (no solvent) byproducts: CO2; Se2Cl2 and anhyd. K2CO3;;
selenide

selenide

hydrogen cation

hydrogen cation

A

selenium
7782-49-2

selenium

B

tellurium

tellurium

Conditions
ConditionsYield
In sulfuric acid byproducts: H2O; Electrochem. Process;
In not given byproducts: H2O; Electrochem. Process; in diffusion layer of Hg cathode;
In sulfuric acid byproducts: H2O; aq. H2SO4; Electrochem. Process;
selenite anion
14124-67-5

selenite anion

A

selenide

selenide

B

selenium
7782-49-2

selenium

C

sodium tetraselenide

sodium tetraselenide

Conditions
ConditionsYield
With sodium hydroxide In water byproducts: H2; Electrolysis; 30-75°C; pH=8; Pb cathode; effect of temp. and conc.; discussion of polarization curve against normal H-electrode;
With NaOH In water byproducts: H2; Electrolysis; 30-75°C; pH=8; Pb cathode; effect of temp. and conc.; discussion of polarization curve against normal H-electrode;
selenite anion
14124-67-5

selenite anion

A

selenium
7782-49-2

selenium

B

sodium tetraselenide

sodium tetraselenide

Conditions
ConditionsYield
With sodium hydroxide; water In water Electrolysis; 30-75°C; Pt cathode; >8 g NaOH/l;A 0%
B n/a
selenite anion
14124-67-5

selenite anion

A

sodium selenide

sodium selenide

B

selenium
7782-49-2

selenium

Conditions
ConditionsYield
With sodium hydroxide; water In water Electrolysis; 40-80°C; 6 h; steel cathode; 750-1250 A/m**2;
selenite anion
14124-67-5

selenite anion

A

selenide

selenide

B

selenium
7782-49-2

selenium

Conditions
ConditionsYield
With sodium hydroxide; water In water Kinetics; Electrolysis; 40-80°C; steel cathode and anode; 250-1250 A/m**2;
With sodium hydroxide; water In water Electrolysis; 30-75°C; Pt cathode; 1.8-8 g NaOH/l;
With NaOH; H2O In water Kinetics; Electrolysis; 40-80°C; steel cathode and anode; 250-1250 A/m**2;
rhenium

rhenium

selenium
7782-49-2

selenium

rhenium(IV) selenide

rhenium(IV) selenide

Conditions
ConditionsYield
600°C; 3-5 h;100%
580°C in evacuated quartz ampul;
In neat (no solvent) 3-zone furnace, heating (24 h, 800°C, vac., growth zone 1000°C), chemical vapor transport method using Br2 or ICl3, vac., gradient1050-1000°C; piezoreflectance measurement, XRD;
boron

boron

selenium
7782-49-2

selenium

boron selenide

boron selenide

Conditions
ConditionsYield
ratio of Se:B=2; 5 h at 850°C;100%
ratio of Se:B=10; 10 h at 850°C;100%
ratio of Se:B=2.5; 1 h at 850°C;100%
bismuth
7440-69-9

bismuth

selenium
7782-49-2

selenium

bismuth(III) selenide

bismuth(III) selenide

Conditions
ConditionsYield
In neat (no solvent) under dry N2 atm. in vac. glovebox; mixt. of Bi and Se was transferred in quartz tube, with was flame sealed under vac.; tube was heated to 600°C for 48 h; stayed at 600°C for 2 ds; cooled to 50°C in 10 h; ground into powder;100%
high pressure at 420°C;
on Al plate at 47-180°C; tempering under m.p. of Se; no reaction at 130°C without tempering;
Conditions
ConditionsYield
stoich. ratio of Se and Cu in bomb;100%
In neat (no solvent) prepn. of film by vac. evaporation onto glass substrate (160 - 250°C);
In neat (no solvent) heating (sealed silica tube, to 800°C), annealing (400°C, 1 week), grinding, pelletizing, heat treatment (400°C, 30 days), slow cooling to room temp.;
Conditions
ConditionsYield
stoich. ratio of Se and Cu in bomb;100%
In neat (no solvent) synthesized from elements;
In neat (no solvent) mixt. heating (evac. sealed bulb), according to: A. A. Babitsyna et al.,Zhur. Neorg. Khim. 20 (1975) 3097, 3357; Russ. J. Inorg. Chem. 20 (1975 ) No. 11 and 12;
selenium
7782-49-2

selenium

lithium borohydride

lithium borohydride

diborane
19287-45-7

diborane

Li(1+)*H3BSe(B2H5)(1-)=Li[H3BSeB2H5]
162556-25-4

Li(1+)*H3BSe(B2H5)(1-)=Li[H3BSeB2H5]

Conditions
ConditionsYield
In further solvent(s) byproducts: H2; Ar atm.; monoglyme, room temp., heating (50°C); evapn. (vac.), crystn.;100%
bismuth
7440-69-9

bismuth

selenium
7782-49-2

selenium

tellurium

tellurium

Bi(x)(Te0.9Se0.1)3 x:1.96-2.04;

Bi(x)(Te0.9Se0.1)3 x:1.96-2.04;

Conditions
ConditionsYield
In neat (no solvent) Bi, Se and Te ground, pressed at 650 K, homogenizing calcination (570 K, 400h) in evacuated quartz ampoules; single phase (X-ray- and electron-microprobe analyses);100%
bismuth
7440-69-9

bismuth

selenium
7782-49-2

selenium

tellurium

tellurium

Bi(x)(Te0.8Se0.2)3 x:1.8-2.2;

Bi(x)(Te0.8Se0.2)3 x:1.8-2.2;

Conditions
ConditionsYield
In neat (no solvent) Bi, Se and Te ground, pressed at 650 K, homogenizing calcination (730 K, 400h) in evacuated quartz ampoules; single phase (X-ray- and electron-microprobe analyses);100%
selenium
7782-49-2

selenium

arsenic pentafluoride
7784-36-3

arsenic pentafluoride

fluorosulfonylchloride
13637-84-8

fluorosulfonylchloride

sulfur dioxide
7446-09-5

sulfur dioxide

iodine
7553-56-2

iodine

(diselenium tetraiodine)(AsF6)2*SO2

(diselenium tetraiodine)(AsF6)2*SO2

Conditions
ConditionsYield
byproducts: AsF3; SO2 and AsF5 were condensed into Se and I2; after 16 h no insoluble material was observed; condensed SO2ClF into the soln.; react. time 3 h; slowly (ca.20 h) condension; cooling; crystn.; washing; removed volatile materials by evacuation; subjected to vac. for <0.2 h; elem. anal.;100%
byproducts: AsF3; SO2 and AsF5 were condensed onto Se and I2; after 16 h no insoluble material was observed; condensation of SO2ClF onto the soln.; react. time 7 h; slowly (ca.20 h) condensation of solvent; cooling; crystn.; washing; removal of volatile material by evacuation; elem. anal.;104 %
selenium
7782-49-2

selenium

arsenic pentafluoride
7784-36-3

arsenic pentafluoride

sulfur dioxide
7446-09-5

sulfur dioxide

iodine
7553-56-2

iodine

(diselenium tetraiodine)-(AsF6)2

(diselenium tetraiodine)-(AsF6)2

Conditions
ConditionsYield
AsF5 was condensed onto a mixture of Se and I2 in liq. SO2; react. time 4 h; slowly (ca.20 h) condensation of solvent; crystn.; after 16 h removal of volatile material by evacuation; elem. anal.; X-ray diffraction;100%
AsF5 was condensed onto a mixture of Se and I2 in liq. SO2; react. time 6 h; slowly (ca.20 h) condensation; crystn.; after 16 h removal of volatile materials by evacuation; elem. anal.; X-ray diffraction;106 %
selenium
7782-49-2

selenium

bis(pentafluorophenyl)telluride
18064-76-1

bis(pentafluorophenyl)telluride

bis(perfluorophenyl) selenide
973-18-2

bis(perfluorophenyl) selenide

Conditions
ConditionsYield
at 320°C, heating in vacuum;100%
at 320°C, heating in vacuum;100%
selenium
7782-49-2

selenium

n-butyllithium
109-72-8, 29786-93-4

n-butyllithium

1,2-dicarba-closo-dodecaborane(12)
16872-09-6

1,2-dicarba-closo-dodecaborane(12)

dilithium 1,2-dicarba-closo-dodecaborane(12)-1,2-diselenolate

dilithium 1,2-dicarba-closo-dodecaborane(12)-1,2-diselenolate

Conditions
ConditionsYield
In diethyl ether; hexane byproducts: C4H10; addn. of hexane soln. to Et2O soln. of carborane, addn. of selenium; not isolated;100%
In diethyl ether in Et2O soln. according to X. Y. Yu et al., Organometallics, vol. 21 (2002), p. 5540;
In hexane
Stage #1: n-butyllithium; 1,2-dicarba-closo-dodecaborane(12) In diethyl ether for 0.5h; Inert atmosphere; Schlenk technique;
Stage #2: selenium In diethyl ether at 0℃; Inert atmosphere; Schlenk technique;
selenium
7782-49-2

selenium

dibromo(2,4,6-tris[bis(trimethylsilyl)methyl]phenyl)(2,4,6-tricyclohexylphenyl)stannane
820217-14-9

dibromo(2,4,6-tris[bis(trimethylsilyl)methyl]phenyl)(2,4,6-tricyclohexylphenyl)stannane

5-(2,4,6-tricyclohexylphenyl)-5-[2,4,6-tris[bis(trimethylsilyl)methyl]phenyl]-1,2,3,4,5-tetraselenastannolane
198023-01-7

5-(2,4,6-tricyclohexylphenyl)-5-[2,4,6-tris[bis(trimethylsilyl)methyl]phenyl]-1,2,3,4,5-tetraselenastannolane

Conditions
ConditionsYield
With lithium naphthalenide In tetrahydrofuran (Ar); lithium naphthalenide in THF added a THF soln. of Sn compd. at -65°C, stirred for 1.5 h at this temp., treated with Se at -70°C, stirred overnight while warming to room temp.; solvent-removed, subjected to column chromy. (Florisil/CH2Cl2), HPLC, recrystd. (CH2Cl2/MeCN); elem. anal.;100%
(diphenylphosphin)ferrocene
12098-17-8

(diphenylphosphin)ferrocene

selenium
7782-49-2

selenium

ferrocenyl(diphenyl)phosphine selenide
566921-50-4

ferrocenyl(diphenyl)phosphine selenide

Conditions
ConditionsYield
In toluene Se (1.2 equiv.) added to soln. of Fe complex in toluene, mixt. stirred at 100°C for 1 h, cooled to room temp.; soln. filtered through Celite, filtrate dried under vac.; elem. anal.;100%
In chloroform under Ar atm.; according to Allen, D. W., Taylor, B. F., J. Chem. Soc., Dalton Trans., 1982, 51; Fe-complex was boiled with Se for 5 h; excess of Se filtered off; solvent removed (vac.); elem. anal.;98%
selenious acid
7783-00-8

selenious acid

selenium
7782-49-2

selenium

Conditions
ConditionsYield
With ascorbic acid In H2O byproducts: dehydroascorbic acid, H2O; selenium nanoparticles obtained by redn. of selenous acid with ascorbic acid; gravimetric anal.;96%
In water Electrolysis; <30°C; steel cathode covered by amorphous Se;
pptn. of Se by reducing agents;;
(pentamethylcyclopentadienyl)Ir(trimethylphosphane)Cl2

(pentamethylcyclopentadienyl)Ir(trimethylphosphane)Cl2

(NEt4)2Se6

(NEt4)2Se6

A

selenium
7782-49-2

selenium

B

(pentamethylcyclopentadienyl)(cyclo-tetraselenido)(trimethylphosphane)iridium

(pentamethylcyclopentadienyl)(cyclo-tetraselenido)(trimethylphosphane)iridium

Conditions
ConditionsYield
In N,N-dimethyl-formamide (Ar), treated dropwise with stirring, stirred for 16 h; filtered, concentrated, column chromatography on silica gel (pentane/CH2Cl2 (1:2)), recrystallized from hexane/chloroform at -25°C, elem. anal.;A n/a
B 92%
titanocene pentaselenide
12307-22-1

titanocene pentaselenide

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

A

selenium
7782-49-2

selenium

B

[(C5H5)2TiSe2C2(CO2CH3)2]
82865-10-9

[(C5H5)2TiSe2C2(CO2CH3)2]

Conditions
ConditionsYield
In xylene under N2, xylene soln. of Ti complex and dimethyl acetylenedicarboxylate refluxed for 0.5 h; cooled, filtered, Se washed with CH2Cl2, filtrate evapd. to oil, dissolved in small amt. of CH2Cl2, chromd., diluted with CH2Cl2, concd. in vac., cooled at -20°C, filtered;A n/a
B 90%
In 1,2-dichloro-ethane Kinetics; under N2, soln. of Ti complex in 1,2-dichloroethane refluxed for 0.5 h,dimethyl acetylenedicarboxylate added to refluxing soln.; progress react. monitored by removing aliquots and recording visible spectrum, cooled soln. filtered, filtrate evapd. to dryness in high vac., residue dissolved in CH2Cl2, diluted with hexane, concd.;A n/a
B 77%
selenic acid
7783-08-6

selenic acid

selenium
7782-49-2

selenium

Conditions
ConditionsYield
With sulfuric acid; potassium iodide In sulfuric acid byproducts: I2; sepn. of the formed I2 by distn.;;87.8%
With sulfuric acid; potassium iodide In sulfuric acid byproducts: I2, H2O; storage at room temperature for 4 weeks;;38.4%
With sodium hypophosphite In water heating for a longer period of time;;>99
1-dibutylboryl-2-diphenylphosphino-1-butyl-2-phenylethene selenide
127134-80-9

1-dibutylboryl-2-diphenylphosphino-1-butyl-2-phenylethene selenide

A

selenium
7782-49-2

selenium

B

1-dibutylboryl-2-diphenylphosphino-1-butyl-2-phenylethene oxide
127114-64-1

1-dibutylboryl-2-diphenylphosphino-1-butyl-2-phenylethene oxide

Conditions
ConditionsYield
In acetonitrile Electrolysis; under inert gas, Hg pool working electrode, Ag/AgNO3 reference electrode, Pt platelet as auxiliary electrode, base electrolyte Et4NClO4, electrolysis time 4 h, electrolysis current from 600-800mA at the start to 5 mA at the end; evapn. of soln. till ppt. of electrolyte appears, filtn., treating of filtrate with hexane, filtn., (31)P and (1)H NMR and IR detn. of compds.;A 74%
B 82%
selenourea
630-10-4

selenourea

zinc(II) sulfate
7733-02-0

zinc(II) sulfate

A

selenium
7782-49-2

selenium

B

zinc(II) selenide

zinc(II) selenide

Conditions
ConditionsYield
With NH3; Na2SO3; N2H4*H2O In water Kinetics; byproducts: Zn(O,OH), Zn; 50°C; 15 min; pH 11.5; deposited on CuInS2; not isolated; detected by XPS;A 5%
B 79%
With NH3; Na2SO3; N2H4*H2O In water Kinetics; byproducts: Zn(O,OH), Zn; 50°C; 15 min; pH 11.5; deposited on SnO2; not isolated; detected by XPS;A 16%
B 39%
titanocene pentaselenide
12307-22-1

titanocene pentaselenide

hexafluoro-2-butyne
692-50-2

hexafluoro-2-butyne

A

selenium
7782-49-2

selenium

B

[(C5H5)2TiSe2C2(CF3)2]
82865-12-1

[(C5H5)2TiSe2C2(CF3)2]

Conditions
ConditionsYield
In xylene under N2, hexafluoro-2-butyne condensed into react. tube with Ti complex and xylene, sealed, annealed, tube heated at 150-160°C for 2 h; soln. filtered, filtrate evapd. to dryness, extd. with CH2Cl2, filteredto remove unreacted Ti complex, CH2Cl2 soln. diluted with hexane, concd., cooled to -20°C, filtered;A n/a
B 78%
selenourea
630-10-4

selenourea

zinc(II) sulfate
7733-02-0

zinc(II) sulfate

A

selenium
7782-49-2

selenium

B

zinc(II) selenide

zinc(II) selenide

C

selenium(IV) oxide
7446-08-4

selenium(IV) oxide

Conditions
ConditionsYield
With NH3; Na2SO3; N2H4*H2O In water Kinetics; byproducts: Zn(O,OH), Zn; 60°C; 20 min; pH 11.5; deposited on glass; not isolated; detected by XPS;A 14%
B 77%
C 4%
hydrogenchloride
7647-01-0

hydrogenchloride

potassium ferrocenecarboselenoate

potassium ferrocenecarboselenoate

A

selenium
7782-49-2

selenium

B

diferrocenoyl selenide
779339-32-1

diferrocenoyl selenide

C

diferrocenoyl diselenide
779339-31-0

diferrocenoyl diselenide

Conditions
ConditionsYield
With air In tetrahydrofuran at 21 - 25℃; for 24h;A n/a
B 62%
C n/a
selenous acid dimethyl ester
7600-22-8

selenous acid dimethyl ester

ammonia
7664-41-7

ammonia

A

selenium
7782-49-2

selenium

B

selenium(IV) oxide
7446-08-4

selenium(IV) oxide

C

selenium nitride

selenium nitride

Conditions
ConditionsYield
In ammonia reaction of OSe(OCH3)2 with an excess of liq. NH3 in a bomb for 12 h;; evaporation of the excess of NH3; addn. of abs. ether; filtration; washing with H2O and 10% KCN soln.;;A 5.3%
B 45.8%
C 48.8%
diethyl selenite
14364-97-7

diethyl selenite

ammonia
7664-41-7

ammonia

A

selenium
7782-49-2

selenium

B

selenium(IV) oxide
7446-08-4

selenium(IV) oxide

C

selenium nitride

selenium nitride

Conditions
ConditionsYield
In ammonia reaction of OSe(OC2H5)2 with an excess of liq. NH3 in a bomb for 12 h;; evaporation of the excess of NH3; addn. of abs. ether; filtration; washing with H2O and 10% KCN soln.;;A 5.3%
B 45.8%
C 48.8%
In benzene byproducts: N2; dropwise addition of OSe(OCH2CH3)2 to dry benzene; introduction of NH3 into this solution;; sucking off; treatment with water and 10% KCN soln.; carefully dried at 105°C;;
tungsten diselenide

tungsten diselenide

A

selenium
7782-49-2

selenium

B

tungsten
7440-33-7

tungsten

Conditions
ConditionsYield
In neat (no solvent, solid phase) heating of WSe2 single crystal flakes enclosed in envelopes made by thin Ta plates by passing current;A 30%
B n/a
In neat (no solvent, solid phase) heating single crystal flakes of WSe2 by current in high vac.;
Bis{bis(trifluormethyl)phosphanyl}-selan
51101-58-7

Bis{bis(trifluormethyl)phosphanyl}-selan

iodine
7553-56-2

iodine

A

selenium
7782-49-2

selenium

B

iodo-bis-trifluoromethyl-phosphine
359-64-8

iodo-bis-trifluoromethyl-phosphine

Conditions
ConditionsYield
Irradiation (UV/VIS); UV irradiation (6 h) in Pyrex bomb tube;A n/a
B 22%
bis(4-methoxyphenyl)selenide
22216-66-6

bis(4-methoxyphenyl)selenide

A

selenium
7782-49-2

selenium

B

bis(4-methoxyphenyl)diselenide
38762-70-8

bis(4-methoxyphenyl)diselenide

C

methoxybenzene
100-66-3

methoxybenzene

Conditions
ConditionsYield
With hydrogen iodide In chloroform; water at 60℃; for 6h;A 22%
B 34 %Chromat.
C 41.3 %Chromat.
bis(4-methoxyphenyl)selenide
22216-66-6

bis(4-methoxyphenyl)selenide

A

selenium
7782-49-2

selenium

B

4-(4-hydroxyphenylselanyl)phenol
141982-42-5

4-(4-hydroxyphenylselanyl)phenol

C

1,2-bis(4-hydroxyphenyl)diselane
835629-63-5

1,2-bis(4-hydroxyphenyl)diselane

D

phenol
108-95-2

phenol

Conditions
ConditionsYield
With pyridine hydrochloride at 200℃; for 0.833333h;A 16%
B n/a
C n/a
D n/a
disodium diselenide

disodium diselenide

1,2,3,4,5-pentafluoro-6-iodobenzene
827-15-6

1,2,3,4,5-pentafluoro-6-iodobenzene

mercury

mercury

A

selenium
7782-49-2

selenium

B

bis(pentafluorophenylseleno)mercury
20331-75-3

bis(pentafluorophenylseleno)mercury

Conditions
ConditionsYield
In further solvent(s) byproducts: (C6F5)2Se; Irradiation (UV/VIS); glyme;A n/a
B 15%
In ammonia byproducts: (C6F5)2Se; Irradiation (UV/VIS); N2 atm.; -35°C, 2-72, evapn., extraction (CCl3F), evapn., sublimation, addn. of Hg, stirring (2 d); filtn., washing (CCl3F), extraction (CHCl3), recrystn. (CHCl3);A n/a
B 2.4%
In neat (no solvent) byproducts: (C6F5)2Se; Irradiation (UV/VIS);A n/a
B 2%
In ammonia byproducts: (C6F5)2Se; N2 atm.; -35°C, 20 min, evapn., extraction (CCl3F), evapn., sublimation, addn. of Hg, stirring (2 d); filtn., washing (CCl3F), extraction (CHCl3), recrystn. (CHCl3);A n/a
B 2.7%
disodium diselenide

disodium diselenide

bromopentafluorobenzene
344-04-7

bromopentafluorobenzene

mercury

mercury

A

selenium
7782-49-2

selenium

B

bis(pentafluorophenylseleno)mercury
20331-75-3

bis(pentafluorophenylseleno)mercury

Conditions
ConditionsYield
In ammonia byproducts: (C6F5)2Se; N2 atm.; -35°C, 20 min, evapn., extraction (CCl3F), evapn., sublimation, addn. of Hg, stirring (2 d); filtn., washing (CCl3F), extraction (CHCl3), recrystn. (CHCl3);A n/a
B 12.2%
sodium selenide

sodium selenide

bromopentafluorobenzene
344-04-7

bromopentafluorobenzene

mercury

mercury

A

selenium
7782-49-2

selenium

B

bis(pentafluorophenylseleno)mercury
20331-75-3

bis(pentafluorophenylseleno)mercury

Conditions
ConditionsYield
In tetrahydrofuran byproducts: (C6F5)2Se; Irradiation (UV/VIS); N2 atm.; -40 to 60°C, 3-4 h, evapn., stirring (12 h, 20°C), filtn., evapn., sublimation (vac.), addn. of Hg, stirring (2 d, 20°C); filtn., washing (CCl3F), extraction (CHCl3), recrystn. (CHCl3);A n/a
B 9.1%
triphenylstibine oxide * selenium dioxide

triphenylstibine oxide * selenium dioxide

triphenylantimony
603-36-1

triphenylantimony

selenium
7782-49-2

selenium

Conditions
ConditionsYield
In not given boiling for 50 h;1%
sodium selenide

sodium selenide

1,2,3,4,5-pentafluoro-6-iodobenzene
827-15-6

1,2,3,4,5-pentafluoro-6-iodobenzene

mercury

mercury

A

selenium
7782-49-2

selenium

B

bis(pentafluorophenylseleno)mercury
20331-75-3

bis(pentafluorophenylseleno)mercury

Conditions
ConditionsYield
In tetrahydrofuran byproducts: (C6F5)2Se; Irradiation (UV/VIS); N2 atm.; -40 to 60°C, 3-18 h, stirring (12 h, 20°C), filtn., evapn., sublimation, addn. of Hg, stirring (2 d); filtn., washing (CCl3F), extraction (CHCl3), recrystn. (CHCl3);A n/a
B 0.5%
In tetrahydrofuran byproducts: (C6F5)2Se; N2 atm.; 20°C, 20 min, stirring (12 h, 20°C), filtn., evapn., sublimation, addn. of Hg, stirring (2 d, 20°C); filtn., washing (CCl3F), extraction (CHCl3), recrystn. (CHCl3);A n/a
B 0.6%
potassium carbonate
584-08-7

potassium carbonate

diselenium dichloride
10025-68-0

diselenium dichloride

A

selenium
7782-49-2

selenium

B

potassium chloride

potassium chloride

C

selenium oxychloride
7791-23-3

selenium oxychloride

Conditions
ConditionsYield
In melt byproducts: CO2;
In neat (no solvent) byproducts: CO2; Se2Cl2 and anhyd. K2CO3;;
In melt byproducts: CO2;
In neat (no solvent) byproducts: CO2; Se2Cl2 and anhyd. K2CO3;;
selenide

selenide

hydrogen cation

hydrogen cation

A

selenium
7782-49-2

selenium

B

tellurium

tellurium

Conditions
ConditionsYield
In sulfuric acid byproducts: H2O; Electrochem. Process;
In not given byproducts: H2O; Electrochem. Process; in diffusion layer of Hg cathode;
In sulfuric acid byproducts: H2O; aq. H2SO4; Electrochem. Process;
selenite anion
14124-67-5

selenite anion

A

selenide

selenide

B

selenium
7782-49-2

selenium

C

sodium tetraselenide

sodium tetraselenide

Conditions
ConditionsYield
With sodium hydroxide In water byproducts: H2; Electrolysis; 30-75°C; pH=8; Pb cathode; effect of temp. and conc.; discussion of polarization curve against normal H-electrode;
With NaOH In water byproducts: H2; Electrolysis; 30-75°C; pH=8; Pb cathode; effect of temp. and conc.; discussion of polarization curve against normal H-electrode;
selenite anion
14124-67-5

selenite anion

A

selenium
7782-49-2

selenium

B

sodium tetraselenide

sodium tetraselenide

Conditions
ConditionsYield
With sodium hydroxide; water In water Electrolysis; 30-75°C; Pt cathode; >8 g NaOH/l;A 0%
B n/a
selenite anion
14124-67-5

selenite anion

A

sodium selenide

sodium selenide

B

selenium
7782-49-2

selenium

Conditions
ConditionsYield
With sodium hydroxide; water In water Electrolysis; 40-80°C; 6 h; steel cathode; 750-1250 A/m**2;
selenite anion
14124-67-5

selenite anion

A

selenide

selenide

B

selenium
7782-49-2

selenium

Conditions
ConditionsYield
With sodium hydroxide; water In water Kinetics; Electrolysis; 40-80°C; steel cathode and anode; 250-1250 A/m**2;
With sodium hydroxide; water In water Electrolysis; 30-75°C; Pt cathode; 1.8-8 g NaOH/l;
With NaOH; H2O In water Kinetics; Electrolysis; 40-80°C; steel cathode and anode; 250-1250 A/m**2;
rhenium

rhenium

selenium
7782-49-2

selenium

rhenium(IV) selenide

rhenium(IV) selenide

Conditions
ConditionsYield
600°C; 3-5 h;100%
580°C in evacuated quartz ampul;
In neat (no solvent) 3-zone furnace, heating (24 h, 800°C, vac., growth zone 1000°C), chemical vapor transport method using Br2 or ICl3, vac., gradient1050-1000°C; piezoreflectance measurement, XRD;
boron

boron

selenium
7782-49-2

selenium

boron selenide

boron selenide

Conditions
ConditionsYield
ratio of Se:B=2; 5 h at 850°C;100%
ratio of Se:B=10; 10 h at 850°C;100%
ratio of Se:B=2.5; 1 h at 850°C;100%
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