CAS Registry Number: 13007-90-4
CAS Name: Dicarbonylbis(triphenylphosphine)nickel
Additional Names: dicarbonyldi(triphenylphosphino)nickel
Molecular Formula: C38H30NiO2P2
Molecular Weight: 639.28
Percent Composition: C 71.39%, H 4.73%, Ni 9.18%, O 5.01%, P 9.69%
Line Formula: [(C6H5)3P]2Ni(CO)2
Literature References: Obtained by reacting one mole of nickel carbonyl with two moles of triphenylphosphine: Reppe, Schweckendiek, Ann. 560, 104 (1948); Rose, Statham, J. Chem. Soc. 1950, 69. Also by reacting CO with a methanol soln of triphenylphosphine and reduced Ni at 170° and 60 atm: Yamamoto, Oku, Bull. Chem. Soc. Jpn. 27, 382 (1954), C.A. 49, 6856 (1955).
Properties: Crystals from benzene, mp 210-215° (Rose); mp 206-209° (Reppe). Catalytic activity decreases with storage.
Melting point: mp 210-215° (Rose); mp 206-209° (Reppe)
Use: Catalyst in polymerization of acetylene to benzene and styrene, trimerization of ethynyl compds, cyclization of butadiene.