91550-03-7

Basic information

• Product Name: bis(1,2-bis(diphenylphosphino)ethane)rhodium formate
• CAS NO: 91550-03-7
• Molecular Weight: 944.771
• Mol File: 91550-03-7.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: bis(1,2-bis(diphenylphosphino)ethane)rhodium formate(CAS DataBase Reference)
• NIST Chemistry Reference: bis(1,2-bis(diphenylphosphino)ethane)rhodium formate(91550-03-7)
• EPA Substance Registry System: bis(1,2-bis(diphenylphosphino)ethane)rhodium formate(91550-03-7)

Safety Data

• Hazardous Substances Data: 91550-03-7(Hazardous Substances Data)

Upstream product

• 15043-47-7 Rh((C₆H₅)2PCH₂CH₂P(C₆H₅)2)2Cl 
• 590-29-4 potassium formate 
• 125979-15-9 [(COD)Rh(μ-,kappa.O,O'-HCO2)]2 
• 1663-45-2 1,2-bis-(diphenylphosphino)ethane 
• 64-18-6 formic acid 

Relevant articles and documents

Structure and reactivity of dimeric rhodium(i) formate complexes: X-ray crystal structure analysis of [{(cod)rh(μ-κ2o,o′-hco2)}2] and phosphane-induced hydride transfer to give an η3-cyclooctenyl complex

The X-ray crystal structure analysis of [(L2)Rh(μ-κ2O,O′-HCO2)2Rh(L′2)] 1a (L2 = L′2 = cod) is reported. Complex 1a reacts with CO to form 1c (L = L′ = CO) via the intermediate 1b (L2 = cod, L′ = CO). 1a and 1c do not incorporate 13CO2 or D2 in the formate moiety and are poor catalysts for CO2 hydrogenation to formic acid. Reaction of la with the chelating phosphanes R2P(CH2)2PR2 (R = Ph, iPr, Cy) 3a-c leads to replacement of the diolefin ligand and cleavage of the dimeric structure under formation of monomeric complexes [(3a-c)2Rh][HCO2] 4a-c. 4a was isolated in up to 78% yield and complexes [(3a)2RhH] 5a and [(3a)Rh(η3-C8H13)] 6a were detected as side products. Complexes of type 6 are formed exclusively under identical reaction conditions using the bidentate ligand Ph2P(CH2)3PPh2 3d or monodentate ligands PAr3 3e-f. A possible mechanism for the formation of complexes 4, 5 and 6 is discussed involving hydride transfer from the HCO-2 ligand to Rh and subsequently to coordinated cod.