POTASSIUM DICYANOAURATE(I)
Molecular Formula C2AuKN2
CAS No. 13967-50-5
Specific Gravity: 3.45 g/cm3
Solubility in H2O: Very soluble in H2O.
Appearance and Odor: White crystal powder, odor of almonds.
POTASSIUM is the actinic aspect with the attribute K (from Neo-Latin kalium) and diminutive amount 19. Elemental potassium is a bendable silvery-white acrid metal that oxidizes rapidly in air and is actual acknowledging with water, breeding acceptable calefaction to burn the hydrogen emitted in the reaction.
Potassium is an acutely alive metal, which reacts berserk with oxygen and baptize in air. With oxygen, it converts to potassium achromatize and with baptize potassium hydroxide. The acknowledgment of potassium with baptize is alarming because of its agitated exothermic appearance and the assembly of hydrogen gas. Hydrogen reacts afresh with atmospheric oxygen, bearing water, which reacts with the actual potassium. This acknowledgment requires alone traces of water; because of this, potassium and its aqueous admixture with sodium — NaK — are almighty desiccants that can be acclimated to dry solvents above-mentioned to distillation.
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Thursday, March 8, 2012
Safety of CHLORO(TRIETHYLPHOSPHINE)GOLD(I)
Specifications of CHLORO(TRIETHYLPHOSPHINE)GOLD(I)
Offered as 250 mg (sc-227606)
CAS Number: 15529-90-5
Molecular Weight: 350.58
Molecular Formula: C6H15AuClP
Safety of CHLORO(TRIETHYLPHOSPHINE)GOLD(I)
Risk Statements: R23,R24,R25,R36,R37,R38
Safety Statements: S26,S28,S36,S37,S39,S45
assay 97%
bp 210 °C/0.03 mmHg(lit.)
mp 84-86 °C(lit.
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Offered as 250 mg (sc-227606)
CAS Number: 15529-90-5
Molecular Weight: 350.58
Molecular Formula: C6H15AuClP
Safety of CHLORO(TRIETHYLPHOSPHINE)GOLD(I)
Risk Statements: R23,R24,R25,R36,R37,R38
Safety Statements: S26,S28,S36,S37,S39,S45
assay 97%
bp 210 °C/0.03 mmHg(lit.)
mp 84-86 °C(lit.
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Wednesday, March 7, 2012
Properyies of Cholesteryl Acetate (Cholesterol acetate)
Cholesteryl Acetate (Cholesterol acetate)
Molecular Weight: 428.69
Molecular Formula: C29H48O2
Purity: ≥95%
Form: Solid
Physical Appearance: White crystalline powder
Solubility: Does not mix well with water. Soluble in chloroform.
Storage: Store at 4° C
Properties of Cholesteryl Acetate (Cholesterol acetate)
Boling Point: 493.3ºC
Boiling Point Pressure: 760 mmHg
Flash Point: 248.8ºC
Density: 0.99 g/cm3
Vapor Pressure: 7.13E-10 mmHg at 25ºC
Refractive Index: 1.515
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Molecular Weight: 428.69
Molecular Formula: C29H48O2
Purity: ≥95%
Form: Solid
Physical Appearance: White crystalline powder
Solubility: Does not mix well with water. Soluble in chloroform.
Storage: Store at 4° C
Properties of Cholesteryl Acetate (Cholesterol acetate)
Boling Point: 493.3ºC
Boiling Point Pressure: 760 mmHg
Flash Point: 248.8ºC
Density: 0.99 g/cm3
Vapor Pressure: 7.13E-10 mmHg at 25ºC
Refractive Index: 1.515
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Uses of Dichlorotris(triphenylphosphine)ruthenium(II)
Dichlorotris(triphenylphosphine)ruthenium(II) is a allocation circuitous of ruthenium. This amber amber solid is a forerunner to added complexes including those acclimated as constant catalysis.
Properties
RuCl2(PPh3)3 is the artefact of the acknowledgment of ruthenium trichloride trihydrate with a methanolic band-aid of triphenylphosphine.
2 RuCl3(H2O)3 + 7 PPh3 → 2 RuCl2(PPh3)3 + 2 HCl + 5 H2O + 1 OPPh3
When conducted in the attendance of beyond balance of triphenylphosphine, the amalgam affords atramentous RuCl2(PPh3)4.
The allocation apple of RuCl2(PPh3)3 can be beheld as either five-coordinate or octahedral. One allocation website is active by one of the hydrogen atoms of a phenyl group. This Ru---H agostic alternation is continued (2.59 Å) and weak. The low agreement of the admixture is reflected by the differing lengths of the Ru-P bonds: 2.374, 2.412, and 2.230 Å. The Ru-Cl band lengths are both 2.387 Å.
Use
RuCl2(PPh3)3 facilitates oxidations, reductions, cross-couplings, cyclizations, and isomerization. It is acclimated in the Kharasch accession of chlorocarbons to alkenes.
Dichlorotris(triphenylphosphine)ruthenium(II) serves as a precatalyst for the hydrogenation of alkenes, nitro compounds, ketones, carboxylic acids, and imines. On the added hand, it catalyzes the blaze of alkanes to tertiary alcohols, amides to t-butyldioxyamides, and tertiary amines to α-(t-butyldioxyamides) application tert-butyl hydroperoxide. Application added peroxides, oxygen, and acetone, the agitator can burn alcohols to aldehydes or ketones. Application dichlorotris(triphenylphosphine)ruthenium(II) the N-alkylation of amines with alcohols is aswell accessible
RuCl2(PPh3)3 calmly catalyzes the atomization of formic acerbic into carbon dioxide and hydrogen gas in the attendance of an amine. Since carbon dioxide can be trapped and hydrogenated on an automated scale, formic acerbic represents a abeyant accumulator and busline medium.
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Properties
RuCl2(PPh3)3 is the artefact of the acknowledgment of ruthenium trichloride trihydrate with a methanolic band-aid of triphenylphosphine.
2 RuCl3(H2O)3 + 7 PPh3 → 2 RuCl2(PPh3)3 + 2 HCl + 5 H2O + 1 OPPh3
When conducted in the attendance of beyond balance of triphenylphosphine, the amalgam affords atramentous RuCl2(PPh3)4.
The allocation apple of RuCl2(PPh3)3 can be beheld as either five-coordinate or octahedral. One allocation website is active by one of the hydrogen atoms of a phenyl group. This Ru---H agostic alternation is continued (2.59 Å) and weak. The low agreement of the admixture is reflected by the differing lengths of the Ru-P bonds: 2.374, 2.412, and 2.230 Å. The Ru-Cl band lengths are both 2.387 Å.
Use
RuCl2(PPh3)3 facilitates oxidations, reductions, cross-couplings, cyclizations, and isomerization. It is acclimated in the Kharasch accession of chlorocarbons to alkenes.
Dichlorotris(triphenylphosphine)ruthenium(II) serves as a precatalyst for the hydrogenation of alkenes, nitro compounds, ketones, carboxylic acids, and imines. On the added hand, it catalyzes the blaze of alkanes to tertiary alcohols, amides to t-butyldioxyamides, and tertiary amines to α-(t-butyldioxyamides) application tert-butyl hydroperoxide. Application added peroxides, oxygen, and acetone, the agitator can burn alcohols to aldehydes or ketones. Application dichlorotris(triphenylphosphine)ruthenium(II) the N-alkylation of amines with alcohols is aswell accessible
RuCl2(PPh3)3 calmly catalyzes the atomization of formic acerbic into carbon dioxide and hydrogen gas in the attendance of an amine. Since carbon dioxide can be trapped and hydrogenated on an automated scale, formic acerbic represents a abeyant accumulator and busline medium.
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Monday, March 5, 2012
Where to buy TETRAKIS(TRIPHENYLPHOSPHINE)PLATINUM?
TETRAKIS(TRIPHENYLPHOSPHINE)PLATINUM is the chemical compound with the formula Pt(P(C6H5)3)4, often abbreviated Pt(PPh3)4. The bright yellow compound is widely used as a precursor to other platinum complexes.
The molecule is tetrahedral, with point group symmetry of Td, as expected for a four-coordinate metal complex of a metal with the d10 configuration. Even though this complex follows the 18 electron rule, it dissociates triphenylphosphine in solution to give the 16e− derivative containing only three PPh3 ligands: Pt(PPh3)4 → Pt(PPh3)3 + PPh3
The complex is typically prepared in one-pot reaction from potassium tetrachloroplatinate(II). Reduction of TETRAKIS(TRIPHENYLPHOSPHINE)PLATINUM with alkaline ethanol in the presence of excess triphenylphosphine affords the product as a precipitate. The reaction occurs in two distinct steps. In the first step, PtCl2(PPh3)2 is generated. In the second step, this platinum(II) complex is reduced. The overall synthesis can be summarized as:
K2[PtCl4] + 2KOH + 4PPh3 + C2H5OH → Pt(PPh3)4 + 4KCl + CH3CHO + 2H2O
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The molecule is tetrahedral, with point group symmetry of Td, as expected for a four-coordinate metal complex of a metal with the d10 configuration. Even though this complex follows the 18 electron rule, it dissociates triphenylphosphine in solution to give the 16e− derivative containing only three PPh3 ligands: Pt(PPh3)4 → Pt(PPh3)3 + PPh3
The complex is typically prepared in one-pot reaction from potassium tetrachloroplatinate(II). Reduction of TETRAKIS(TRIPHENYLPHOSPHINE)PLATINUM with alkaline ethanol in the presence of excess triphenylphosphine affords the product as a precipitate. The reaction occurs in two distinct steps. In the first step, PtCl2(PPh3)2 is generated. In the second step, this platinum(II) complex is reduced. The overall synthesis can be summarized as:
K2[PtCl4] + 2KOH + 4PPh3 + C2H5OH → Pt(PPh3)4 + 4KCl + CH3CHO + 2H2O
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Sunday, March 4, 2012
Where to get Oxycarbonydichlorotris(triphenylphosphine)ruthenium?
Specifications of Oxycarbonydichlorotris(triphenylphosphine)ruthenium
Molecular Formula Ru(CO)2Cl2(PPh3)2
Synonyms Oxycarbonydichlorotris(triphenylphosphine)ruthenium
Dichlorotris(triphenylphosphine)ruthenium(II) is a coordination complex of ruthenium. This chocolate brown solid is a precursor to other complexes including those used as homogeneous catalysis.
Properties
Oxycarbonydichlorotris(triphenylphosphine)ruthenium is the product of the reaction of ruthenium trichloride trihydrate with a methanolic solution of triphenylphosphine.
When conducted in the presence of larger excess of triphenylphosphine, the synthesis affords black Oxycarbonydichlorotris(triphenylphosphine)ruthenium.
The coordination sphere of Oxycarbonydichlorotris(triphenylphosphine)ruthenium can be viewed as either five-coordinate or octahedral. One coordination site is occupied by one of the hydrogen atoms of a phenyl group. This Ru---H agostic interaction is long (2.59 Å) and weak. The low symmetry of the compound is reflected by the differing lengths of the Ru-P bonds: 2.374, 2.412, and 2.230 Å. The Ru-Cl bond lengths are both 2.387 Å.
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Molecular Formula Ru(CO)2Cl2(PPh3)2
Synonyms Oxycarbonydichlorotris(triphenylphosphine)ruthenium
Dichlorotris(triphenylphosphine)ruthenium(II) is a coordination complex of ruthenium. This chocolate brown solid is a precursor to other complexes including those used as homogeneous catalysis.
Properties
Oxycarbonydichlorotris(triphenylphosphine)ruthenium is the product of the reaction of ruthenium trichloride trihydrate with a methanolic solution of triphenylphosphine.
When conducted in the presence of larger excess of triphenylphosphine, the synthesis affords black Oxycarbonydichlorotris(triphenylphosphine)ruthenium.
The coordination sphere of Oxycarbonydichlorotris(triphenylphosphine)ruthenium can be viewed as either five-coordinate or octahedral. One coordination site is occupied by one of the hydrogen atoms of a phenyl group. This Ru---H agostic interaction is long (2.59 Å) and weak. The low symmetry of the compound is reflected by the differing lengths of the Ru-P bonds: 2.374, 2.412, and 2.230 Å. The Ru-Cl bond lengths are both 2.387 Å.
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Thursday, March 1, 2012
Applications of PALLADIUM(II) NITRATE DIHYDRATE
PALLADIUM(II) NITRATE DIHYDRATE
Synonym: Palladium dinitrate hydrate
CAS Number: 313222-87-6
Molecular Weight: 248.45
Molecular Formula: N2PdO6 ·H2O
Physical Appearance: Powder
Application of PALLADIUM(II) NITRATE DIHYDRATE
Catalyst for alkene nitration to glycol dinitrates; also used as a precursor to supported Pd catalysts.
Reactant for
Preparation of platinum-palladium/carbon alloy nanocatalysts for methanol-tolerant oxygen reduction reaction in fuel cells
Synthesis of Cu-Pd alloy thin films on Ti substrates by co-electrodeposition of Pd and Cu from nitrate-base electrolytic baths
Preparation of palladium catalyst supported on vertically aligned multi-walled carbon nanotubes for microwave-assisted Heck reactions of p-iodonitrobenzene with styrene and Et acrylate
Preparation of a sinter-resistant Pd/SiO2 nanocatalyst
Preparation of di-phenyl sulfide-modified Pd/TiO2 catalysts for acetylene hydrogenation
Synthesis of alumina-supported palladium catalysts active for the gas phase hydrogenation of crotonaldehyde
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Synonym: Palladium dinitrate hydrate
CAS Number: 313222-87-6
Molecular Weight: 248.45
Molecular Formula: N2PdO6 ·H2O
Physical Appearance: Powder
Application of PALLADIUM(II) NITRATE DIHYDRATE
Catalyst for alkene nitration to glycol dinitrates; also used as a precursor to supported Pd catalysts.
Reactant for
Preparation of platinum-palladium/carbon alloy nanocatalysts for methanol-tolerant oxygen reduction reaction in fuel cells
Synthesis of Cu-Pd alloy thin films on Ti substrates by co-electrodeposition of Pd and Cu from nitrate-base electrolytic baths
Preparation of palladium catalyst supported on vertically aligned multi-walled carbon nanotubes for microwave-assisted Heck reactions of p-iodonitrobenzene with styrene and Et acrylate
Preparation of a sinter-resistant Pd/SiO2 nanocatalyst
Preparation of di-phenyl sulfide-modified Pd/TiO2 catalysts for acetylene hydrogenation
Synthesis of alumina-supported palladium catalysts active for the gas phase hydrogenation of crotonaldehyde
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