sodium tetraphenyl borate
copper(II) acetylacetonate
zinc(II) acetylacetonate
A
copper
B
zinc
Conditions | Yield |
---|---|
In 1,2-dimethoxyethane Irradiation (UV/VIS); under Ar; mole ratios NaBPh4 : Zn(acac)2 : Cu(acac)2 = 20 : 7 : 3; irradn. (254 nm) for 18 h gave deposition only of Cu; | A 100% B 0% |
Conditions | Yield |
---|---|
In 1,2-dimethoxyethane Irradiation (UV/VIS); under Ar; mole ratio NaBPh4 : ZnI2 = 2 : 1; irradn. (254 nm) for 2 h gave deposition of Zn; deposit sepd., washed with acetone and water, and dried in vac. to give pure Zn; | 100% |
Conditions | Yield |
---|---|
In 1,2-dimethoxyethane Irradiation (UV/VIS); under Ar; mole ratio NaBPh4 : ZnBr2 = 2 : 1; irradn. (254 nm) for 4 h gave deposition of Zn; deposit sepd., washed with acetone and water, and dried in vac. to give pure Zn; | 99% |
Conditions | Yield |
---|---|
at 225℃; for 4h; Inert atmosphere; | A 93 %Spectr. B 99% |
at 225℃; for 4h; | A 77 %Spectr. B n/a |
Conditions | Yield |
---|---|
at 250℃; for 4h; Inert atmosphere; | A 94 %Spectr. B 99% |
zinc
Conditions | Yield |
---|---|
With pyrographite In neat (no solvent) redn. on react. with excess C (beech-wood coal, 400% excess) in hard porcelain tube in a stream of N2 at 995°C after 240min;; | 98.4% |
With C In neat (no solvent) redn. on react. with excess C (beech-wood coal, 400% excess) in hard porcelain tube in a stream of N2 at 995°C after 240min;; | 98.4% |
With pyrographite In neat (no solvent) redn. on react. with excess C (beech-wood coal, 400% excess) in hard porcelain tube in a stream of N2 at 920°C after 180min;; | 97.7% |
Conditions | Yield |
---|---|
In tetrahydrofuran Ar atmosphere; mixing of solns. (-78°C), warming to 20°C (stirring), pptn.; collection of pptd. Zn (filtn.), solvent removal, distn.; | A 79.8% B 97% |
Conditions | Yield |
---|---|
at 210℃; for 4h; Inert atmosphere; | A 91 %Spectr. B 96% |
Conditions | Yield |
---|---|
sodium chloride In neat (no solvent) atm. pressure (inert gas), 800°C;; pure Zn;; | A n/a B 95% |
sodium chloride In neat (no solvent) begin of reaction in vac. or H2 atmosphere at 700-800°C, fast reaction between 800-900°C;; pure Zn;; |
zinc
Conditions | Yield |
---|---|
With pyrographite In neat (no solvent) redn. in electric furnace without fusion of residues;; whole yield;; | 92.6% |
With C In neat (no solvent) redn. in electric furnace without fusion of residues;; whole yield;; | 92.6% |
With sodium hydroxide; sodium cyanide In not given Electrolysis; electrolytical deposition of zinc from soln. of alkali cyanide; bath composition (in g/l): 45 ZnO, 100 NaCN, 38 NaOH, 7 MoO3; deposition conditions: 161 - 753 A/m*m;; |
Conditions | Yield |
---|---|
In tetrahydrofuran byproducts: H2; the mixt. was refluxed at 65°C for 6 h, cooled to 0°C; filtered; | A n/a B n/a C 90% |
Conditions | Yield |
---|---|
In melt Electrolysis; | 84% |
Stage #1: zinc(II) chloride With thionyl chloride Heating; Stage #2: With naphthalene; lithium; Benzo[b]thiophene In tetrahydrofuran for 1h; | 46% |
With magnesium In diethyl ether byproducts: etherate of ZnCl2; on react. of Mg with anhyd. ZnCl2 at low temp., redn.;; | 34.8% |
Conditions | Yield |
---|---|
In 1,2-dimethoxyethane Irradiation (UV/VIS); under Ar; mole ratio NaBPh4 : Zn(acac)2 = 2 : 1; irradn. (254 nm) for 4 h gave deposition of Zn; deposit sepd., washed with acetone and water, and dried in vac. to give pure Zn; | 80% |
sodium tetraphenyl borate
copper(ll) bromide
A
copper
B
zinc
Conditions | Yield |
---|---|
In 1,2-dimethoxyethane Irradiation (UV/VIS); under Ar; mole ratios NaBPh4 : ZnI2 : CuBr2 = 8 : 1 : 3; irradn. (254 nm) for 8 h gave deposition of Zn and Cu; examn. of the Zn-Cu powder by ESCA measurement showed that more than 60% of the sample consisted of a Zn-Cu alloy and that the balance of the particles were Zn and Cu metals; | A 74% B 24% |
zinc
Conditions | Yield |
---|---|
With magnesium In diethyl ether redn. in abs. ether soln. by Mg at room temp.;; | 43% |
With Mg In diethyl ether redn. in abs. ether soln. by Mg at room temp.;; | 43% |
With lithium In tetrahydrofuran Sonication; reduction with Li powder and ultrasound at room temp. in THF, reduction was complete within 40 min; workup was performed in air; |
dicyclohexylzinc(II)
zinc
Conditions | Yield |
---|---|
With water In further solvent(s) (Ar); heating a soln. of zinc compd. in anisole contg. traces of water at 130°C in a Fischer-Porter bottle for 3 h; filtration, washing with anisole, drying in vac.; | 30% |
With water; polyvinylpyrrolidone In further solvent(s) (Ar); heating a soln. of zinc compd. in anisole contg. traces of water at 130°C in a Fischer-Porter bottle for 3 h; filtration, washing with anisole, drying in vac.; | 30% |
zinc
Conditions | Yield |
---|---|
In not given Electrolysis; Zn deposition from solution of ZnSO4*7H2O and thiosulfate; bath composition (in g/l): 60 ZnSO4*7H2O, 200 Na2S2O3*5H2O, 25 - 50 NH4Cl or 120 ZnSO4*7H2O, 400 Na2S2O3*5H2O, 25 - 50 NH4Cl, 75°C, 1 - 2 A/dm*dm, Fe cathode, Zn anode;; | 3% |
In not given Electrolysis; Zn deposition from solution of ZnSO4*7H2O and thiosulfate; bath composition (in g/l): 60 ZnSO4*7H2O, 200 Na2S2O3*5H2O, 25 - 50 NH4Cl or 120 ZnSO4*7H2O, 400 Na2S2O3*5H2O, 25 - 50 NH4Cl, 75°C, 1 - 2 A/dm*dm, Fe cathode, Zn anode;; | 3% |
In not given Electrolysis; Zn deposition from acidic ZnSO4 soln.; bath composition (g/l): 400 ZnSO4*7H2O, 70 K-Al-sulfate, 24 MgSO4, 20 H3BO3, pH = 3.9, 25 °C;; |
A
zinc(II) cyanimide
B
copper
C
zinc
Conditions | Yield |
---|---|
In neat (no solvent) sample heating at 4 K/min in Ar to 900°C, temp. keeping for 3 h; XRD; | A n/a B n/a C 1% |
Conditions | Yield |
---|---|
With H2 In neat (no solvent) sample heating in TG apparatus in 25% H2/He (50 ml/min) at 5 K/min up to800°C; TG; |
zinc
Conditions | Yield |
---|---|
With pyrographite In neat (no solvent) Kinetics; redn. of ZnO at 1050°C;; | |
With carbon monoxide; pyrographite redn.;; | |
With anthracite In neat (no solvent) byproducts: CO, CO2; redn.;; | >99 |
zinc
Conditions | Yield |
---|---|
In further solvent(s) Electrolysis; electrolysis of soln. of Zn(CLO4)2*2H2O in monoethylether of ethylen glycole, no deposition of Zn at Cu cathode; generation of gas at anode and cathode;; | 0% |
In further solvent(s) Electrolysis; electrolysis of soln. of Zn(CLO4)2*2H2O in monoethylether of ethylen glycole, no deposition of Zn at Cu cathode; generation of gas at anode and cathode;; | 0% |
zinc
Conditions | Yield |
---|---|
With K4P2O7; KNO3 In water Electrochem. Process; deposited on electrode; not isolated; |
pyrographite
A
carbon disulfide
B
carbon monoxide
C
iron
D
zinc
Conditions | Yield |
---|---|
technical prepartion of Zn, effect of presence of iron;; |
Conditions | Yield |
---|---|
direct smelting of sulfide ores, smelting of zinc blende with iron ore and coal;; |
Conditions | Yield |
---|---|
In further solvent(s) Electrolysis; electrolysis of soln. of 0.117g Zn(CN)2 / 10 g acetamide at 100°C and 0.05 A/cm*cm; Cu cathode, Pt anode, stirred soln.; at some positions of cathode deposition of Zn; on addn. of 1 ml H2O to soln., excellent deposit;; | |
With sodium hydroxide; sodium cyanide; sodium carbonate In water Electrolysis; from aq. soln. of Zn(CN)2, NaCN, NaOH, Na2CO3, NaF, dextrose, gum arabic; temp. lower than 35°C; current density lower 8.6 A/dm**2; Mg cathode; then heating to 257-427°C for 1-4 min;; pptn. on Mg;; | |
With sodium hydroxide; sodium cyanide In not given Electrolysis; zinc plating from cyanide soln. of different compositions (Zn(CN)2, NaOH, NaCN in alternating ratio), current density of 1.5 - 4 A/dm*dm; Zn casting anode with addn. of Al, Hg; steel cathode; structure of deposits;; |
Conditions | Yield |
---|---|
In ammonia | |
In ammonia NH3 (liquid); |
Conditions | Yield |
---|---|
In neat (no solvent) Zn films, obtained on corroded or polished Cu base by vapor metallizing, are showing no changing of positions of electron interferences on heating in vacuum; between 250 - 440°C, oxidation of Zn to ZnO completely;; | 100% |
In neat (no solvent) Zn films, obtained on corroded or polished Cu base by vapor metallizing, are showing no changing of positions of electron interferences on heating in vacuum; between 250 - 440°C, oxidation of Zn to ZnO completely;; | 100% |
With air; NH4NH3 In neat (no solvent, gas phase) Zn, NH4NH3 (0-18 wt.%) mixed; pressed; placed into reactor; combustion react. ignited in air by heating for several s up to 1850°C; powerturned off after ignition; O2 available in closed chamber approx. 3 tim es; SEM; TEM; XRD; | 90% |
3,3,5-trimethyl-6-ethoxycarbonyl-8-chlorothiochroman-4-one-1,1-dioxide
zinc
Conditions | Yield |
---|---|
With hydrogenchloride; sodium hydroxide In ethanol; water | 100% |
o-cyanobromobenzene
zinc
A
biphenyl-2,2'-dicarbonitrile
B
benzonitrile
C
2-cyanophenylzinc bromide
Conditions | Yield |
---|---|
With trifluoroacetic acid; cobalt(II) bromide; zinc dibromide In acetonitrile the mixt. in CH3CN was stirred at room temp., then arylbromide was added, stirred at room temp.; GC analysis; | A 0% B 0% C 100% |
Conditions | Yield |
---|---|
In acetonitrile; benzene Electrolysis; absence of oxygen and moisture; W-cathode, Zn suspended on Pt-anode, 30 V, 25 mA, 3.0 h, Et4NClO4 electrolyte; sepn. of pptd. product (further crop on addn. of petroleum ether), washing (petroleum ether), drying (vac.); elem. anal.; | 100% |
Conditions | Yield |
---|---|
strong HCl; | 100% |
strong HCl; | 100% |
Conditions | Yield |
---|---|
With sodium methylate In methanol Sonication; Zn added to a methanol soln. containing an equivalent quantity of phthalonitrile and 5 drops of 30% soln of CH3ONa in methanol; flask put into an ultrasonic cleaner and maintained at 50°C for 24-72 h; blue product separated from unreacted metal by shaking and decanting with the solvent, washed with ethanol in Soxhlet equipment and dried in air; purity of 95-97%; elem. anal.; | 100% |
With sodium methylate In further solvent(s) Sonication; Zn added to an 1-octanol soln. containing an equivalent quantity of phthalonitrile and 5 drops of 30% soln of CH3ONa in methanol; flask put intoan ultrasonic cleaner and maintained at 50°C for 24-72 h; blue product separated from unreacted metal by shaking and decanting with the solvent, washed with ethanol in Soxhlet equipment and dried in air; purity of 95-97%; elem. anal.; | 100% |
With sodium methylate In methanol Sonication; Zn added to a methanol soln. containing an equivalent quantity of phthalonitrile and 5 drops of 30% soln of CH3ONa in methanol; flask put into an ultrasonic cleaner and maintained at 40°C for 24-72 h; blue product separated from unreacted metal by shaking and decanting with the solvent, washed with ethanol in Soxhlet equipment and dried in air; purity of 95-97%; elem. anal.; | 85% |
Conditions | Yield |
---|---|
In acetonitrile byproducts: H2; Electrolysis; electrochemical cell with a platinum cathode and a Zn-anode attached to a platinum wire, in presence of Et4NClO4, N2 bubbled slowly through the soln., reaction time: 2.5 h, 10 V; filtered, washed with CH3CN, dried in vac.; elem. anal.; | 100% |
Conditions | Yield |
---|---|
In acetonitrile byproducts: H2; Electrolysis; electrochemical cell with a platinum cathode and a Zn-anode attached to a platinum wire, in presence of Et4NClO4, N2 bubbled slowly through the soln., reaction time: 3.5 h, 10 V; filtered, washed with CH3CN, dried in vac.; elem. anal.; | 100% |
Conditions | Yield |
---|---|
In acetonitrile byproducts: H2; Electrolysis; electrochemical cell with a platinum cathode and a Zn-anode attached to a platinum wire, in presence of Et4NClO4, N2 bubbled slowly through the soln., reaction time: 2.5 h, 10 V; filtered, washed with CH3CN, dried in vac.; elem. anal.; | 100% |
Conditions | Yield |
---|---|
In acetonitrile byproducts: H2; Electrolysis; electrochemical cell with a platinum cathode and a Zn-anode attached to a platinum wire, in presence of Et4NClO4, N2 bubbled slowly through the soln., reaction time: 3 h, 10 V; filtered, washed with CH3CN, dried in vac.; elem. anal.; | 100% |
Conditions | Yield |
---|---|
In toluene powdered Zn adding to Sn deriv. in toluene under N2, refluxing for 8 h, cooling to room temp., filtering, filtrate washing with H2O, drying over MgSO4 and concg.; identified by NMR spectrum; | 100% |
Conditions | Yield |
---|---|
In tetrahydrofuran Br(CH2)5Br was added to Zn powder in THF in a sealed and evacuated glass apparatus, mixt. was stirred for 5 h at 65°C; detd. by titrn.; | 100% |
zinc
Conditions | Yield |
---|---|
In water excess Zn dust was added to aq. soln. copper complex ad stitrred for 30 min; excess of Zn was filtered off, soln. was evapd., residue was crystd. from water/EtOH; elem. anal.; | 100% |
sodium tetraphenyl borate
copper(II) acetylacetonate
zinc(II) acetylacetonate
A
copper
B
zinc
Conditions | Yield |
---|---|
In 1,2-dimethoxyethane Irradiation (UV/VIS); under Ar; mole ratios NaBPh4 : Zn(acac)2 : Cu(acac)2 = 20 : 7 : 3; irradn. (254 nm) for 18 h gave deposition only of Cu; | A 100% B 0% |
Conditions | Yield |
---|---|
In 1,2-dimethoxyethane Irradiation (UV/VIS); under Ar; mole ratio NaBPh4 : ZnI2 = 2 : 1; irradn. (254 nm) for 2 h gave deposition of Zn; deposit sepd., washed with acetone and water, and dried in vac. to give pure Zn; | 100% |
Conditions | Yield |
---|---|
In 1,2-dimethoxyethane Irradiation (UV/VIS); under Ar; mole ratio NaBPh4 : ZnBr2 = 2 : 1; irradn. (254 nm) for 4 h gave deposition of Zn; deposit sepd., washed with acetone and water, and dried in vac. to give pure Zn; | 99% |
Conditions | Yield |
---|---|
at 225℃; for 4h; Inert atmosphere; | A 93 %Spectr. B 99% |
at 225℃; for 4h; | A 77 %Spectr. B n/a |
Conditions | Yield |
---|---|
at 250℃; for 4h; Inert atmosphere; | A 94 %Spectr. B 99% |
zinc
Conditions | Yield |
---|---|
With pyrographite In neat (no solvent) redn. on react. with excess C (beech-wood coal, 400% excess) in hard porcelain tube in a stream of N2 at 995°C after 240min;; | 98.4% |
With C In neat (no solvent) redn. on react. with excess C (beech-wood coal, 400% excess) in hard porcelain tube in a stream of N2 at 995°C after 240min;; | 98.4% |
With pyrographite In neat (no solvent) redn. on react. with excess C (beech-wood coal, 400% excess) in hard porcelain tube in a stream of N2 at 920°C after 180min;; | 97.7% |
Conditions | Yield |
---|---|
In tetrahydrofuran Ar atmosphere; mixing of solns. (-78°C), warming to 20°C (stirring), pptn.; collection of pptd. Zn (filtn.), solvent removal, distn.; | A 79.8% B 97% |
Conditions | Yield |
---|---|
at 210℃; for 4h; Inert atmosphere; | A 91 %Spectr. B 96% |
Conditions | Yield |
---|---|
sodium chloride In neat (no solvent) atm. pressure (inert gas), 800°C;; pure Zn;; | A n/a B 95% |
sodium chloride In neat (no solvent) begin of reaction in vac. or H2 atmosphere at 700-800°C, fast reaction between 800-900°C;; pure Zn;; |
zinc
Conditions | Yield |
---|---|
With pyrographite In neat (no solvent) redn. in electric furnace without fusion of residues;; whole yield;; | 92.6% |
With C In neat (no solvent) redn. in electric furnace without fusion of residues;; whole yield;; | 92.6% |
With sodium hydroxide; sodium cyanide In not given Electrolysis; electrolytical deposition of zinc from soln. of alkali cyanide; bath composition (in g/l): 45 ZnO, 100 NaCN, 38 NaOH, 7 MoO3; deposition conditions: 161 - 753 A/m*m;; |
Conditions | Yield |
---|---|
In tetrahydrofuran byproducts: H2; the mixt. was refluxed at 65°C for 6 h, cooled to 0°C; filtered; | A n/a B n/a C 90% |
Conditions | Yield |
---|---|
In melt Electrolysis; | 84% |
Stage #1: zinc(II) chloride With thionyl chloride Heating; Stage #2: With naphthalene; lithium; Benzo[b]thiophene In tetrahydrofuran for 1h; | 46% |
With magnesium In diethyl ether byproducts: etherate of ZnCl2; on react. of Mg with anhyd. ZnCl2 at low temp., redn.;; | 34.8% |
Conditions | Yield |
---|---|
In 1,2-dimethoxyethane Irradiation (UV/VIS); under Ar; mole ratio NaBPh4 : Zn(acac)2 = 2 : 1; irradn. (254 nm) for 4 h gave deposition of Zn; deposit sepd., washed with acetone and water, and dried in vac. to give pure Zn; | 80% |
sodium tetraphenyl borate
copper(ll) bromide
A
copper
B
zinc
Conditions | Yield |
---|---|
In 1,2-dimethoxyethane Irradiation (UV/VIS); under Ar; mole ratios NaBPh4 : ZnI2 : CuBr2 = 8 : 1 : 3; irradn. (254 nm) for 8 h gave deposition of Zn and Cu; examn. of the Zn-Cu powder by ESCA measurement showed that more than 60% of the sample consisted of a Zn-Cu alloy and that the balance of the particles were Zn and Cu metals; | A 74% B 24% |
zinc
Conditions | Yield |
---|---|
With magnesium In diethyl ether redn. in abs. ether soln. by Mg at room temp.;; | 43% |
With Mg In diethyl ether redn. in abs. ether soln. by Mg at room temp.;; | 43% |
With lithium In tetrahydrofuran Sonication; reduction with Li powder and ultrasound at room temp. in THF, reduction was complete within 40 min; workup was performed in air; |
dicyclohexylzinc(II)
zinc
Conditions | Yield |
---|---|
With water In further solvent(s) (Ar); heating a soln. of zinc compd. in anisole contg. traces of water at 130°C in a Fischer-Porter bottle for 3 h; filtration, washing with anisole, drying in vac.; | 30% |
With water; polyvinylpyrrolidone In further solvent(s) (Ar); heating a soln. of zinc compd. in anisole contg. traces of water at 130°C in a Fischer-Porter bottle for 3 h; filtration, washing with anisole, drying in vac.; | 30% |
zinc
Conditions | Yield |
---|---|
In not given Electrolysis; Zn deposition from solution of ZnSO4*7H2O and thiosulfate; bath composition (in g/l): 60 ZnSO4*7H2O, 200 Na2S2O3*5H2O, 25 - 50 NH4Cl or 120 ZnSO4*7H2O, 400 Na2S2O3*5H2O, 25 - 50 NH4Cl, 75°C, 1 - 2 A/dm*dm, Fe cathode, Zn anode;; | 3% |
In not given Electrolysis; Zn deposition from solution of ZnSO4*7H2O and thiosulfate; bath composition (in g/l): 60 ZnSO4*7H2O, 200 Na2S2O3*5H2O, 25 - 50 NH4Cl or 120 ZnSO4*7H2O, 400 Na2S2O3*5H2O, 25 - 50 NH4Cl, 75°C, 1 - 2 A/dm*dm, Fe cathode, Zn anode;; | 3% |
In not given Electrolysis; Zn deposition from acidic ZnSO4 soln.; bath composition (g/l): 400 ZnSO4*7H2O, 70 K-Al-sulfate, 24 MgSO4, 20 H3BO3, pH = 3.9, 25 °C;; |
A
zinc(II) cyanimide
B
copper
C
zinc
Conditions | Yield |
---|---|
In neat (no solvent) sample heating at 4 K/min in Ar to 900°C, temp. keeping for 3 h; XRD; | A n/a B n/a C 1% |
Conditions | Yield |
---|---|
With H2 In neat (no solvent) sample heating in TG apparatus in 25% H2/He (50 ml/min) at 5 K/min up to800°C; TG; |
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