palladium
Conditions | Yield |
---|---|
With hydrogen In neat (no solvent) on calcination in a stream of H2, complete redn. to Pd;; | 100% |
With H2 In neat (no solvent) on calcination in a stream of H2, complete redn. to Pd;; | 100% |
With copper(l) chloride redn. of salt to metal with CuCl;; |
π-methallyl palladium chloride
Methyl formate
A
methyl 3-methyl-3-butenoate
B
palladium
Conditions | Yield |
---|---|
With carbon monoxide; sodium butyrate In neat (no solvent) mixt. of PdCl(C3H5), HCO2Me, Na butyrate (as nucleophile) stirred at room temp. for 30 min, addn. of CO, react. time 2 h; react. mixt. filtered, colourless liquid analysed by GLC; | A 100% B n/a |
With carbon monoxide In neat (no solvent) mixt. of PdCl(C3H5), HCO2Me and nucleophile (propionate,acetate,benzoate,chloroacetate,trifluoroacetate,t-BuO(1-),EtO(1-),MeO(1-),PhO(1-),p-Nitro-PhO(1-) or F3-EtO(1-), alkoxides under CO) stirred at room temp. for 30 min, addn. of CO, react. time 2 h; react. mixt. filtered, colourless liquid analysed by GLC; |
A
formyl 2-pyridyl aldehyde N-acetyl benzoylhydrazone
B
palladium
Conditions | Yield |
---|---|
With CO In dichloromethane (Ar) in schlenk tube; CO bubbled through soln. at room temp. for 5 min;stirred under CO atmosphere; or at 0°C, or at -40°C; filtered through celite; evapd.; MS anal.; elem. anal.; | A 100% B >99 |
palladium
Conditions | Yield |
---|---|
With hydrazine hydrate In methanol cellulose (5 g) added to soln. of PdCl2 (0.443 g) in MeOH; stirred (15 min); 80% hydrazine hydrate added dropwise (15 min); stirred (12 h, room temp.); solid filtered; washed with methanol and acetone; dried (vac.); | 99% |
With hydrogenchloride; hydrazine In water | 98% |
With formic acid In not given refluxing a soln. of PdCl2 and HCOOH for 30 min; decantation, washing with water, drying for 2 h at 120°C; | 96% |
Conditions | Yield |
---|---|
With carbon monoxide; sodium butyrate In neat (no solvent) mixt. of PdCl(C3H5), HCO2Me and NaC4H9O (as nucleophile) stirred at room temp. for 30 min, addn. of CO, react. time 2 h; react. mixt. filtered, colourless liquid analysed by GLC; | A 99% B n/a |
With carbon monoxide In neat (no solvent) mixt. of PdCl(C3H5), MeOH and nucleophile (propionate,acetate,benzoate,chloroacetate,trifluoroacetate,t-BuO(1-),EtO(1-),MeO(1-),PhO(1-),p-Nitro-PhO(1-) or F3-EtO(1-), alkoxides under CO) stirred at room temp. for 30 min, addn. of CO, react. time 2 h; react. mixt. filtered, colourless liquid analysed by GLC; |
Conditions | Yield |
---|---|
In water room temp.; X-ray diffraction, gravimetric anal.; | 99% |
palladium
Conditions | Yield |
---|---|
With tetraglyme In further solvent(s) Pd nanoparticles formed in soln. of Pd3(OAc)6 in tetraglyme at tems. 25-270°C for 3 h; UV/Vis spectroscopy; | 99% |
With H2 In methanol γ-Al2O3 placed in sealed vessel, purged with Ar; in flowing Ar support impregnated with soln. of Pd3(OAc)6 in MeOH with stirring for 2 h; granules dried in air for 15 h and in vac. at 80°C for 5 h; in H2flow at.450°C for 10 h; elem. anal. (ICP AES), XANES; |
Conditions | Yield |
---|---|
heating in vac. at 110°C; | A 67% B 98% |
Conditions | Yield |
---|---|
In ethanol; dimethyl sulfoxide Pd(CH3COO)2 dissolved in DMSO under stirring at room temp., treated withEtOH, kept for 1 h at 70°C; collected, centrifuged, washed (EtOH); | 96% |
Stage #1: palladium diacetate With sodium hydride In tetrahydrofuran at 20℃; Stage #2: With tert-butyl alcohol In tetrahydrofuran at 63℃; for 0.5h; Heating / reflux; | |
With hydrogen In acetic acid interaction of Pd(OAc)2 with H2 in acetic acid; |
di-μ-chloro-bis[2-(2-benzothiazolyl)-2-methylpropyl-C(1),N]dipalladium(II)
A
methyl 3-(2-benzothiazolyl)-3-methylbutyrate
B
palladium
Conditions | Yield |
---|---|
With carbon monoxide In methanol High Pressure; carbonylating at 80°c under 50 atm CO for 20 h with stirring; filtn. of Pd, evapn. to dryness, extg. (pentane), evapn., drying in vac., elem. anal; | A 96% B n/a |
Conditions | Yield |
---|---|
In acetonitrile Irradiation (UV/VIS); | A 96% B n/a |
palladium
Conditions | Yield |
---|---|
In diethyl ether byproducts: exo-C8H11OCOCH3, cyclooctenone; Irradiation (UV/VIS); Pd-complex was irradiated in ether soln. under N2 at room temp. for 3 d; | 95% |
[((C6H5)3P)Pd(P(C6H5)2)Cl]2
C
palladium
Conditions | Yield |
---|---|
With C6H5NH2; H2 In further solvent(s) byproducts: C6H6, aniline hydrochloride; complex suspn. in C6H5NH2 stirred under H2 at 50°C; evapd. (vac.), washed (Et2O and C6H6), C6H6 filtrate concd. (vac.), hexane added (Ar), ppt. washed with hexane and ether, dried (vac.), recrystd. (toluene under Ar); elem. anal.; | A n/a B 95% C n/a |
(CH3O)2C6H3CH2P(C(CH3)3)2
A
((CH3O)2C6H3CH2P(C(CH3)3)2)2Pd2Cl(C4H7)
B
palladium
Conditions | Yield |
---|---|
With NaOH In methanol under N2 atm. soln. ligand in MeOH was added to stirred suspn. ((2-methylallyl)PdCl)2 in MeOH (1:1) immediately followed by addn. NaOH in MeOH and stirred at room temp. overnight; ppt. was extd. with benzene and evapd.; elem. anal.; | A 95% B n/a |
bis(benzonitrile)palladium(II) dichloride
dichloro(2-pyrazol-1-yl-cyclohexanonoxime)palladium(II)
B
palladium
Conditions | Yield |
---|---|
In dichloromethane byproducts: benzonitrile; stirring (30 min); filtering, pptn. on n-pentane addn., washing (Et2O), drying (vac.); elem. anal.; | A 92% B 1% |
phenylboronic acid
A
1-(1-tert-butylsulfanylethyl)-2-phenylbenzene
B
(+/-)-tert-butyl(1-phenylethyl)sulfane
C
palladium
Conditions | Yield |
---|---|
With potassium phosphate; triphenylphosphine In N,N-dimethyl-formamide under Ar atm., mixt. of PhB(OH)2, Pd complex, undecane, PPh3, K3PO3 in DMF heated at 50°C for 20 h, heated at 80°C for 3 h; detd. by gas chromy./mass-spectrometry, NMR, IR-spectroscopy, TEM; | A 92% B 2% C n/a |
With potassium phosphate In N,N-dimethyl-formamide under Ar atm., mixt. of PhB(OH)2, Pd complex, undecane, K3PO3 in DMF heated at 50°C for 20 h, heated at 80°C for 3 h; detd. by gas chromy./mass-spectrometry, NMR, IR-spectroscopy, TEM; | A 70% B 17% C n/a |
ethylmagnesium bromide
A
ethane
B
ethene
C
palladium
E
magnesium chloride
Conditions | Yield |
---|---|
In tetrahydrofuran To a soln. of anhydrous salt is added C2H5MgBr at 20°C with stirring. The reaction mixture is left for 5 - 6 h at room temp.; decantation, washing with THF, water and ethanol; electron diffraction; | A n/a B n/a C 90% D n/a E n/a |
water
A
(S)-1-methylen-2,2-dimethyl-4-(methoxycarbonyl)-2,3,4,5-tetrahydro-indolo[2,1-d]azepinium chloride
B
palladium
Conditions | Yield |
---|---|
With carbon monoxide In chloroform for 12h; | A 90% B n/a |
PdCl(OC6H3CH3N2C6H4SOCH3)
A
2-(methylsulfinyl)-2'-hydroxy-5'-methylazobenzene
B
palladium
Conditions | Yield |
---|---|
With hydrazine hydrate In acetonitrile stirring for 0.5 h; pptn. of metallic Pd, filtration, evapn. in vac., chromy. of the CH2Cl2-soln. on silica gel by benzene, evapn. in vac.; | A 89% B n/a |
π-crotyl palladium chloride
Methyl formate
A
methyl (E)-pent-3-enoate
B
methyl 2-methyl-3-butenoate
C
cis-3-pentenoic acid methyl ester
D
palladium
Conditions | Yield |
---|---|
With carbon monoxide; sodium butyrate In neat (no solvent) mixt. of PdCl(C3H5), HCO2Me, Na butyrate (as nucleophile) stirred at room temp. for 30 min, addn. of CO, react. time 2 h; react. mixt. filtered, colourless liquid analysed by GLC; | A 87.6% B 4.3% C 8% D n/a |
A
3-(2-cycloheptenyl)cycloheptene
B
palladium
Conditions | Yield |
---|---|
In acetonitrile Irradiation (UV/VIS); | A 87% B n/a |
Allyl ether
A
(diallyl ether)(triphenylphosphane)palladium(0)
B
palladium
Conditions | Yield |
---|---|
With triphenyl phosphine In neat (no solvent) (Ar); heating of soln. of Pd complex and PPh3 (equimolar amts., 90°C, several min) in diallyl ether, cooling (20°C), filtration, cooling (below 0°C), crystn.; removal of mother liquor, washing (cold C5H12), drying (in vacuo, 20°C); elem. anal.; | A 86% B n/a |
Conditions | Yield |
---|---|
In further solvent(s) (Ar); addn. of P(iPr)3 to soln. of equimolar amt. of Pd complex in hepta-1,6-diene, heating (80°C, 2 h), evapn., dissoln. (C5H12), filtration (Pd), cooling (-30 to -78°C), crystn.; removal of mother liquor, washing (cold C5H12), drying (in vacuo, 20°C); | A 85% B n/a |
Dimethylallene
A
3,3-dimethyl-4-methylen-6-methoxy-1,2,3,4-tetrahydroisoquinolinium bromide
B
palladium
Conditions | Yield |
---|---|
In dichloromethane for 12h; Inert atmosphere; | A 85% B n/a |
palladium
Conditions | Yield |
---|---|
With tetrabutylammomium bromide In neat (no solvent) at 120℃; for 12h; | 85% |
A
diiodobis(triphenylphosphino)palladium(II)
B
tetraphenylphosphonium iodide
C
palladium
Conditions | Yield |
---|---|
In toluene byproducts: PPh3; under N2 at 110 °C for 16 h; | A <0.1 B 84% C n/a |
6-(4,5-dimethoxy-2-nitrophenyl)-2,3-dimethoxynaphthalene
palladium
6-(2-amino-4,5-dimethoxyphenyl)-2,3-dimethoxynaphthalene
Conditions | Yield |
---|---|
In ethyl acetate | 100% |
palladium
Conditions | Yield |
---|---|
In ethanol | 100% |
In ethanol | 100% |
8-[2,4-Bis(methoxymethoxy)phenyl]-1,4-dioxaspiro[4.5]dec-7-ene
palladium
8-[2,4-bis(methoxymethoxy)phenyl]-1,4-dioxaspiro[4.5]decane
Conditions | Yield |
---|---|
100% | |
100% | |
100% |
tert-butyl (4-{4-[2,4-bis(methoxymethoxy)phenyl]-3-cyclohexen-1-yl}phenoxy) dimethylsilane
palladium
Conditions | Yield |
---|---|
In ethanol | 100% |
Conditions | Yield |
---|---|
In dimethyl amine | 100% |
palladium
3-(3,5-Difluoro-4-methoxyphenyl)propanoic acid
Conditions | Yield |
---|---|
In tetrahydrofuran; pyrographite; ethyl acetate | 100% |
Conditions | Yield |
---|---|
In neat (no solvent) 2:1 molar mixture of educts, 700K; | 100% |
In neat (no solvent, solid phase) according to: W. Bronger, P. Mueller, D. Schmitz, H. Spittank, Z. anorg. allg. Chem. 516 (1984) 35; heating reaction mixt. (molar ratio NaH:Pd=4:1) in H2 atmosphere (360°C, 6 h); X-ray anal.; |
Conditions | Yield |
---|---|
With sulfur trioxide pyridine complex at 25 - 100℃; for 180h; Sealed tube; | 100% |
In nitric acid in presence of air; | |
In nitric acid byproducts: N-oxide; by heating; in presence of air; |
Conditions | Yield |
---|---|
In neat (no solvent, solid phase) Pd:Ti ratio = 1:1, without addn. of carbonate or addn. of 0.42 mass% Li2CO3 or 0.52 mass% Na2CO3, grinding in ethanol, pelletizing, heating in air at 760 to 780°C with repeated grinding and compressing, annealing time 40 or 12 h; | 100% |
Conditions | Yield |
---|---|
With nitronium trifluoromethanesulfonate at 25 - 90℃; for 103h; | 100% |
Conditions | Yield |
---|---|
With nitric acid at 20 - 120℃; for 225h; Sealed tube; | 100% |
Conditions | Yield |
---|---|
Stage #1: palladium With hydrogenchloride; nitric acid In water Stage #2: hydrogenchloride In water Stage #3: CYANAMID With hydrogenchloride In water | 100% |
hydrogenchloride
palladium
triphenylphosphine
bis-triphenylphosphine-palladium(II) chloride
Conditions | Yield |
---|---|
Stage #1: hydrogenchloride; palladium With aqua regia at 80℃; Stage #2: triphenylphosphine In ethanol at 70℃; Stage #3: In ethanol at 70℃; for 1h; Temperature; Solvent; | 100% |
hydrogenchloride
1,1'-bis-(diphenylphosphino)ferrocene
palladium
(1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride
Conditions | Yield |
---|---|
In tetrahydrofuran; ethanol; water at 55 - 60℃; for 3h; Solvent; Temperature; Inert atmosphere; | 99.7% |
4-(tert-butoxycarbonylamino)naphthalen-1-ylboronic acid
sodium carbonate
palladium
7-(4-amino-naphthalen-1-yl)-1H-pyrido [2,3-b][1,4]oxazin-2-one Hydrochloride
Conditions | Yield |
---|---|
With hydrogenchloride; ammonium formate; acetic acid; tetrakis(triphenylphosphine) palladium(0) In 1,4-dioxane; methanol; 1,2-dimethoxyethane; ethanol; ethyl acetate; N,N-dimethyl-formamide | 99% |
palladium
6-(2-nitrophenyl)-2,3-dimethoxynaphthalene
6-(2-aminophenyl)-2,3-dimethoxynaphthalene
Conditions | Yield |
---|---|
In ethyl acetate | 99% |
pyrographite
palladium
5-amino-biphenyl-2-carboxylic acid methyl ester
Conditions | Yield |
---|---|
With ammonium formate In methanol; chloroform | 99% |
styrene
palladium
(1-phenylethyl)trichlorosilane
Conditions | Yield |
---|---|
With trichlorosilane; bis(η3-allyl-μ-chloropalladium(II)) | 99% |
Conditions | Yield |
---|---|
With nitric acid In nitric acid; acetic acid boiling Pd-sponge in mixt. of glacial AcOH and concd. HNO3 (100:3 v/v), addn. of further Pd to end of evolution of N-oxides (if necessary); hot filtration, cooling (crystn.), washing (AcOH, water), drying in air; | 99% |
With nitric acid for 0.5h; Reflux; | 92% |
With nitric acid In acetic acid Pd oxidized with HNO3 in CH3COOH for 30 h according to Stephenson, T.A.,Morehouse, S.M., Powell, A.R., Heffer, J.P., and Wilkinson, G., J. Chem . Soc., 1965, vol. 6, no. 6, p. 3632; crystd.; | 80% |
Conditions | Yield |
---|---|
In neat (no solvent) Nb, Pd and As powders (molar ratio 5:4:4) loaded into alumina tube; evacuated; heated at 600°C for 1 d and 1000°C for 3 d; detd. by X-ray powder diffraction; | 99% |
Conditions | Yield |
---|---|
In neat (no solvent) Pd powder (30 mg) and H2SeO4 (1 ml) sealed in glass ampoule; heated (350°C, 72 h); cooled (3°C/h); | 99% |
Conditions | Yield |
---|---|
In neat (no solvent) Pd powder (15 mg) and H2SeO4 (1 ml) sealed in glass ampoule; heated (350°C, 72 h); cooled (3°C/h); | 99% |
In further solvent(s) on dissolving Pd sponge in a hot mixture of H2SeO4 and HNO3 and slow cooling down of concd. soln.;; on evaporization of soln. of Pd in H2SeO4, selenate is not obtained without impurity of H2SeO4 or H2SeO3;; | |
In further solvent(s) on dissolving Pd sponge in a hot mixture of H2SeO4 and HNO3 and slow cooling down of concd. soln.;; on evaporization of soln. of Pd in H2SeO4, selenate is not obtained without impurity of H2SeO4 or H2SeO3;; |
Conditions | Yield |
---|---|
In neat (no solvent) Pd powder (8 mg) and H2SeO4 (1 ml) and SeO3 (50 mg) sealed in glass ampoule; heated to 250°C; cooled (3°C/h); | 99% |
palladium
Conditions | Yield |
---|---|
In tetrahydrofuran byproducts: I2; at room temp. for 1 h; | 99% |
Palladium was discovered by William Hyde Wollaston in 1803,and it was named by Wollaston in 1804 after the asteroid Pallas, which had been discovered two years earlier.Wollaston found palladium in crude platinum ore from South America by dissolving the ore in aqua regia, neutralizing the solution with sodium hydroxide, and precipitating platinum as ammonium chloroplatinate with ammonium chloride. He added mercuric cyanide to form the compound palladium cyanide, which was heated to extract palladium metal.
Palladium chloride was at one time prescribed as a tuberculosis treatment at the rate of 0.065g per day. This treatment did have many negative side-effects, and was later replaced by more effective drugs.
Palladium's affinity for hydrogen led it to play an essential role in the Fleischmann-Pons experiment in 1989, also known as cold fusion.
In the run up to 2000, Russian supply of palladium to the global market was repeatedly delayed and disrupted .The ensuing market panic drove the palladium price to an all-time high of $1100 per ounce in January 2001. Around this time, the Ford Motor Company, fearing auto vehicle production disruption due to a possible palladium shortage, stockpiled large amounts of the metal purchased near the price high. When prices fell in early 2001, Ford lost nearly US$1 billion.World demand for palladium increased from 100 tons in 1990 to nearly 300 tons in 2000. The global production of palladium from mines was 222 metric tons in 2006 according to USGS data. Most palladium is used for catalytic converters in the automobile industry.
The Palladium, with the cas registry number 7440-05-3, is a kind of silvery white metal. This chemical is soluble in aqua regia, nitric acid, sulfuric acid while slight soluble in muriatic acid and insoluble in cold and hot water. Besides, it is stable chemically while incompatible with ozone, sodium tetrahydroborate, sulphur, arsenic.The product categories are various, including Inorganics; Heterogeneous Catalysts.It is a chemical element having an atomic weight of 106.4, atomic number of 46, and the symbol Pd. It is a white, ductile metal resembling platinum, and following it in abundance and importance of applications. It is used in dentistry in the form of gold, silver, and copper alloys. As to its usage, it is widely applied in many ways. It could be used in the industry of electric instrument, chemical industry and precision alloy; It could also be used in producing catalytic agent like asbestos, undercurrent adherent point, printed circuit, dental materials and surgical instrument.
The physical properties of this chemical are below:
(1)#H bond acceptors: 0; (2)#H bond donors: 0; (3)#Freely Rotating Bonds: 0; (4)Polar Surface Area: 0; (5)Exact Mass: 105.903483; (6)MonoIsotopic Mass: 105.903483; (7)Heavy Atom Count: 1; (8)Covalently-Bonded Unit Count: 1.
Production of Palladium:
The production method of this chemical is below: Prepare the residue of drawing nickel (Ni) and copper (Cu) and then add aqua regia to extract, filter; Next add ammonia and muriatic acid into the filter liquor to have the reaction and then have the ammonium chloropalladate sediment; Then have the refining and filtering and then restore the ammonium chloropalladate with hydrogen, and finally you could get the 99.95% palladium products.
Safety information of Palladium:
When you are using this chemical, you should be very cautious. For one thing, it is irritant to eyes, respiratory system and skin and may cause inflammation to the skin or other mucous membranes. And it may even have risk of serious damage to the eyes. For another thing, it is toxic which may at low levels cause damage to health. This chemical may cause harm to the unborn child, and with the danger of cumulative effects, it will have limited evidence of a carcinogenic effect. In addition, it is highly flammable which may catch fire in contact with air, only needing brief contact with an ignition source. And it has a very low flash point or evolve highly flammable gases in contact with water. Due to so many dangers, you could take the different measures to deal with different cases. Wear suitable protective clothing, gloves and eye/face protection and avoid contacting with skin and eyes . If in case of contact with eyes, rinse immediately with plenty of water and seek medical advice. Then avoid exposure - obtain special instructions before use and remember not to breathe dust.
Additionally, you could convert the following datas into the molecular structure:
(1)Canonical SMILES: [Pd]
(2)InChI: InChI=1S/Pd
(3)InChIKey: KDLHZDBZIXYQEI-UHFFFAOYSA-N
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