52615-19-7

Basic information

• Product Name: Co2(CO)4(μ-CO)2(μ-bis(diphenylphosphino)methane)
• Synonyms: Co2(CO)4(μ-CO)2(μ-bis(diphenylphosphino)methane)
• CAS NO: 52615-19-7
• Molecular Weight: 670.446
• Mol File: 52615-19-7.mol
• Article Data: 5

Chemical Properties

• CAS DataBase Reference: Co2(CO)4(μ-CO)2(μ-bis(diphenylphosphino)methane)(CAS DataBase Reference)
• NIST Chemistry Reference: Co2(CO)4(μ-CO)2(μ-bis(diphenylphosphino)methane)(52615-19-7)
• EPA Substance Registry System: Co2(CO)4(μ-CO)2(μ-bis(diphenylphosphino)methane)(52615-19-7)

Safety Data

• Hazardous Substances Data: 52615-19-7(Hazardous Substances Data)

Upstream product

• 15226-74-1 dicobalt octacarbonyl 
• 2071-20-7 bis-diphenylphosphinomethane 

Downstream Products

• 870074-41-2 [(μ-bis(diphenylphosphino)methane)Co2(CO)4][μ,η-PhCCP(O)(t-Bu)2] 
• 1101206-62-5 [(μ-Ph2PCH2PPh2)Co2(CO)4(μ,η-(t-Bu)2PCC-3,5-(CF3)2C6H3)] 
• 1101206-63-6 [(μ-Ph2PCH2PPh2)Co2(CO)4(μ,η-(t-Bu)2(=O)PCC-3,5-(CF3)2C6H3)] 
• 2071-20-7 bis-diphenylphosphinomethane 
• 81533-57-5 Co₄(CO)8(CH₂(P(C₆H₅)2)2)2 

Relevant articles and documents

Amination and Suzuki coupling reactions catalyzed by palladium complexes coordinated by cobalt-containing monodentate phosphine ligands with bis-trifluoromethyl substituents on bridged arylethynyl: Observation of some unusual metal-containing compounds

Two cobalt-containing bulky monodentate phosphines {[(μ-PPh2CH2PPh2)Co2(CO)4][(μ,η-(tBu)2PC{triple bond, long}CAr]} (4cm: Ar = 3-CF3C6H4; 4cmm: A

Synthesis and reactivity of cobalt dimers of the type Co2(CO)3(L-L)2I2. Crystal structure of [Co2(CO)2(μ-CO) (μ-I) (Me2PCH2PMe2) (Ph2PCH2PPh2)]I

The cobalt dimers Co2(CO)3(L-L)2, L-L = Ph2PCH2PPh2 (dppm) and Me2PCH2PMe2 (dmpm), are oxidized by iodine in the presence of bis(diphenylphosphino)methane to yield the ionic complexes [Co2(CO)3(L-L)(L-L)′]I. In a similar fashion, Co2(CO)6(dppm) reacts with elemental sulfur to yield Co2(CO)3(dppm)2S. The complex [Co2(CO)3(dmpm)(dppm)I]I crystallizes in the P21/n space group with dimensions a = 10.956 (3) A, b = 15.881 (6) ?, c = 21.393 (5) ?, and β = 97.20 (2)° with four molecules per unit cell. Of a total of 4796 unique reflections collected, 2965 reflections with Fo2 > 3σ(Fo2) were used to refine the structure. The structure converged at R = 0.051 and Rw = 0.065. The geometry around the cobalt atoms is very similar to that reported for [Rh2(CO)3(dppm)2Cl]+, [Rh2(CO)3(dppm)2H]+, and Ir2(CO)3(dppm)2S. The molecule may be described as an A-frame structure with a neutral ligand, CO, occupying the additional bridging site. The observed Co-Co bond distance is 2.555 (2) ? consistent with a single bond between the metal atoms. Reduction of the ionic complex with zinc yields a pyrophoric green solid that analyzes approximately for Co2(CO)3(dppm)2.

Reactions of the linked cobalt dimer Co2(CO)6(Ph2PCH2PPh2). Molecular structure of (μ-H)(μ-PPh2)Co2(CO)4(Ph 2PCH2PPh2)

The dimer Co2(CO)6(DPM) (1) (DPM = bis(diphenylphosphino)methane) reacts with hydrogen at moderate pressures (75 atm) to cleave the DPM ligand and yield (μ-H)(μ-PPh2)Co2(CO)4(DPM) (2). This compound can also be synthesized directly from 1 and PPh2H. Pyrolysis of 1 yields the tetranuclear cluster Co4(CO)8(DPM)2. Oxidation of 1 yields the ionic compound [Co2(CO)3(DPM)2I]I. Compound 2 crystallizes in the space group P1, with a = 10.627 (1) A?, b = 19.196 (2) A?, c = 10.251 (1) A?, α = 95.430 (8)°, β = 91.491 (10)°, γ = 85.032 (9)°, and V = 2072.8 A?3. The structure was refined by using 4824 reflections having Fo2 > 10σ(Fo2). The final residuals were R = 0.056 and Rw = 0.096. The cobalt atoms are bridged by a hydride ligand, a phosphido group, and a bis(tertiary phosphine); as a result the Co-Co bond is very long, 2.637 (1) A?. The hydride was found to bridge the two cobalt atoms, with Co-H distances of 1.41 (7) and 1.84 (7) A?. The influence of the μ-H and μ-PPh2 groups is to bend two terminal carbonyls away from the cobalt-cobalt bond. The NMR spectrum shows the hydride as a doublet of triplets at -8.60 ppm.