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  • Product Name:   Chlorotris(triphenylphosphine)rhodium(I)
  • CAS No.:   14694-95-2
  • Molecular Formula:   C54H45ClP3Rh
  • Molecular Weight :   925.21
  • Specification :   98%
  • Place of Origin:   China
  • Appearance :   
  • Document :   Download

Description of Chlorotris(triphenylphosphine)rhodium(I)

Chlorotris(triphenylphosphine)rhodium(I) Chemical Properties

Melting point  245-250 °C (dec.)

Boiling point  >170°C

density  1.363; d 1.379

storage temp.  2-8°C

solubility  Soluble in most solvents (e.g. benzene, ethanol, chloroform, dichloromethane) but with phosphine dissociation. Reacts with O{2} in solution

form  Crystalline Powder

color  Red-brown to maroon

Water Solubility  insoluble

Sensitive  air sensitive

Merck  14,9758


CAS DataBase Reference 14694-95-2(CAS DataBase Reference)

NIST Chemistry Reference chlorotris(triphenylphosphine)rhodium(14694-95-2)

EPA Substance Registry System Rhodium, chlorotris(triphenylphosphine)-, (SP-4-2)-(14694-95-2)

Safety Information

Hazard Codes  C,Xi

Risk Statements  34-36/38

Safety Statements  22-24/25-37/39-28A-26-15-45-36/37/39

RIDADR  1759

WGK Germany  1



HS Code  28439090

Chlorotris(triphenylphosphine)rhodium(I) Usage And Synthesis

  1. A homogeneous hydrogenation catalyst which operates under mild conditions.
  2. Catalyst for the decarbonylation of aldehydes.
  3. Catalyst for regio- and stereoselective allylic substitution reactions.
  4. Alkyne hydro-phosphorylation
  5. Heck-type reaction with α,β-unsaturated esters.
  6. Alkyne arylation
  7. Allylic alcohol-olefin coupling.
  8. Terminal alkenes from ketones.
  9. Rh-catalyzed isomerization of α-aryl propargyl alcohols to indanones.
  10. Reductive deprotection of silyl groups. 

Chemical Properties magenta crystals

Uses suzuki reaction

Uses Tris(triphenylphosphine)rhodium Chloride is also known as Wilkinson's catalyst and is commonly used to catalyze the hydrogenation of alkenes. Tris(triphenylphosphine)rhodium(I) Chloride is also used i n the catalytic hydroboration of alkenes with catecholborane and pinacolborane and the selective 1,4-reduction of α, β-unsaturated carbonyl compounds.

Uses Homogeneous hydrogenation catalyst.

Purification Methods It forms dark burgundy crystals from hot EtOH after refluxing for 30minutes. When the solution is heated for only 5minutes, orange crystals are formed. Heating the orange crystals in EtOH yields red crystals. Crystallisation from Me2CO gives the orange crystals. The two forms have similar IR spectra, but the X-ray diffraction patterns are slighly different. [Osborne et al. J Chem Soc (A) 1711 1966, Osborne & Wilkinson Inorg Synth X 67 1967, Bennett & Donaldson Inorg Chem 16 655 1977.] The solubilities are as follows: in CH2Cl2 ~2% (25o), in toluene 0.2% (25o), and less soluble in Me2CO, MeOH, BuOH and AcOH, but insoluble in pet ethers and cyclohexane. It reacts with donor solvents such as pyridine, DMSO and MeCN.

Chlorotris(triphenylphosphine)rhodium(I) Preparation Products And Raw materials

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