33847-53-9

Upstream product

• 214194-22-6 η(4)-(bicyclo[2.2.1]hepta-2,5-diene)-η(3)-(bis(diphenylphosphinoethyl)phenylphosphine)rhodium(I) hexafluoroantimonate 
• 23582-02-7 bis(2-diphenylphosphinoethyl)phenylphosphine 
• 200426-55-7 [Rh(bis(2-diphenylphosphinoethyl)phenyl phosphine)(CO)]PF₆ 
• 14694-95-2 Wilkinson's catalyst 

Downstream Products

• 61312-98-9 Rh((C₆H₅)P(CH₂CH₂P(C₆H₅)2)2)BH₃ 
• 200426-55-7 [Rh(bis(2-diphenylphosphinoethyl)phenyl phosphine)(CO)]PF₆ 
• 223915-54-6 Rh(bis(2-diphenylphosphinoethyl)phenyl phosphine)(OC₆H₄-p-OMe) 
• 250590-91-1 Rh(C₃₄H₃₃P₃)(PCC(CH₃)3)2⁽¹⁺⁾*BF₄^(1-) = [Rh(C₃₄H₃₃P₃)(PCC(CH₃)3)2]BF₄ 
• 61312-98-9 (BH₃)Rh(bis(3-diphenylphosphinoethyl)phenylphosphine) 
• 1355154-07-2 [Rh(κ3-(Ph2PCH2CH2)PPh)(η2-vinyltrimethylsilane)][B(C6H3-3,5-(CF3)2)4] 
• 223915-49-9 Rh(bis(2-diphenylphosphinoethyl)phenyl phosphine)(OPh) 
• 223915-50-2 Rh(bis(2-diphenylphosphinoethyl)phenyl phosphine)(OC₆H₄-p-Me) 
• 121700-40-1 Rh(I)(1,2-bis(diphenylphosphinoethyl)phenylphosphine)Cl(dihydride) 

Relevant academic research and scientific papers

Polytertiary phosphines and arsines. III. Metal complexes of the tritertiary phosphine bis(2-diphenylphosphinoethyl)phenylphosphine

Metal complexes of the tritertiary phosphine [(C6H5)2PCH2CH2] 2PC6H5 (Pf-Pf-Pf) are discussed. This tritertiary phosphine can bond to transition metals in all six poss

Aldehyde decarbonylation catalysis under mild conditions

Reaction of [RhCl(NBD)]2 with 2.0 equiv of triphos (triphos = bis(2-diphenylphosphinoethyl)phenylphosphine; NBD = bicyclo[2.2.1]hepta-2,5-diene) in THF solution at room temperature affords [Rh(NBD)(triphos)][Cl] (4a), which was isolated as [Rh(NBD)(triphos)]-[SbF6] (4b) in 67% yield. Treatment of 4b with aqueous formaldehyde in THF solution at 80 °C forms [Rh(CO)(triphos)][SbF6] (2a), which reversibly binds a second equivalent of CO(g) to give [Rh(CO)2(triphos)][SbF6] (2b). The complex [Rh(CO)(triphos)][SbF6] has been found to be an effective aldehyde decarbonylation catalyst for primary and aryl aldehydes at temperatures as low as that of refluxing dioxane, with little or no undesirable side products resulting from β elimination or radical rearrangement.

1-Hexene hydroformylation with the rhodium(I) triphosphane complex [Rh(CO){PhP(CH2CH2PPh2)2}]PF 6: An in situ study using high-pressure NMR spectroscopy

The rhodium-catalyzed hydroformylation of 1-hexene in THF with the linear triphosphane PhP(CH2CH2PPh2)2 [PP2] has been studied both in situ and in high-pressure autoclaves. Sapphire NMR tubes with titanium valves have proved useful for studying the in situ reactions under conditions of relatively high syngas pressure (30-90 atm H2/CO) and temperature (60-100 °C). Under conditions conducive to effective hydroformylation, the catalyst precursor [(PP2)Rh(CO)]+ is quantitatively converted to the dicarbonyl [(PP2)Rh(CO)2]+, which is also the termination product of the catalysis. Irrespective of the syngas composition and of the total pressure, the dicarbonyl complex is the only phosphorus-containing species detectable on the NMR time-scale during the course of the isomerization and hydroformylation of the alkene. The PP2-Rh catalytic system exhibits some peculiar features that may be summarized as follows, (i) Very high partial pressures of CO (120 atm) neither inhibit the hydroformylation nor af-feet the n/i selectivity; (ii) alkene hydrogenation occurs neither at very high partial pressures of H2 (120 atm) nor in the absence of added CO; (iii) the isomerization rate is slightly faster than that of hydroformylation; (iv) terminal and internal alkenes (2-, 3-hexenes) are hydroformylated with comparable rates. Various control experiments have been carried out using in-situ NMR, as well as batch experiments under different reaction conditions or with different catalyst precursors. Despite these extensive studies, unambiguous conclusions about the catalysis mechanism have not been reached. In particular, the possibility that different catalysts may be operative depending on the reaction conditions cannot be ruled out. The hydroformylation results rule out the involvement of phosphane-free "Rh-CO" catalysts, even under conditions of very high partial pressure of CO, and point to "(PP2)Rh(CO)x" catalysts with small steric hindrance over the whole range of syngas pressures investigated. WILEY-VCH Verlag GmbH, 1997.

Thermodynamics of homogeneous hydrogenation. Part VI. Thermodynamics of the homogeneous hydrogenation of cyclohexene catalyzed by Rh(I) and Ir(I) complexes of polydentate phosphine ligands

The oxidative addition of H2 to the mixed ligand Rh(I) complex [RhCl(PPh3)(diphos)] 1 and the Rh(I) and Ir(I) complexes of the terdentate ligands NP3, [N(CH2CH2PPh2)3] and triphos, [PhP(CH2CH2PPh2)2], MLCl 2-5 (where M = Rh(I), Ir(I); L = NP3, triphos) proceeds at 30°C and 1 atm of H2 in ethanol-benzene. The homogeneous hydrogenation of cyclohexene catalyzed by complexes 1-5 was investigated in the temperature range 10-40°C at 0.6-1 atm of H2 partial pressure. Thermodynamic parameters for the formation of the dihydrido complexes of 1-5 and the monoolefin complexes of Rh(I) and Ir(I) were computed. The activation parameters corresponding to the rate constant k for the homogeneous hydrogenation of cyclohexene were also calculated.