101630-11-9Relevant academic research and scientific papers
Synthesis, spectroscopic and structural characterisation of chromium(0), molybdenum(0) and tungsten(0) complexes involving primary and secondary phosphines
Campbell, Tom,Gibson, Alexander M.,Hart, Richard,Orchard, Simon D.,Pope, Simon J.A.,Reid, Gillian
, p. 296 - 305 (2007/10/03)
[M(CO)6] (M=Mo or W) reacts with 4.5 molar equivalents of L (L=PPh2H or PPhH2) in excess ethanolic NaBH4 to yield the fac-trisubstituted species [M(CO)3(L)3] in good yield, with no evidence
Heterobimetallic dicyclohexylphosphido-bridged complexes of MoNi, MoPd, MoPt, WNi, WPd, and WPt. Crystal and molecular structure of (CO)4Mo(μ-PCy2)2Pd(PPh3)
Loeb, Stephen J.,Taylor, Hilary A.,Gelmini, Lucio,Stephan, Douglas W.
, p. 1977 - 1982 (2008/10/08)
Reaction of PCy2H with cis-M(CO)4(C5H11N)2 (2:1) results in the formation of cis-M(CO)4(PCy2H)2 (M = Mo (1), W (2)). Generation of Li2[M(CO)4(PCy2)2] in situ from the reaction of 1 and 2 with n-BuLi (1:2) and the addition to a suspension of M′Cl2(PPh3)2 yields the dicyclohexylphosphido-bridged complexes (CO)4M(μ-PCy2)2M′(PPh3) (M = Mo, M′ = Ni (3), Pd (4), Pt (5); M = W, M′ = Ni (6), Pd (7), Pt (8)). All the complexes were characterized by 31P{1H} NMR and IR spectroscopy. The crystal and molecular structure of (CO)4Mo(μ-PCy2)2Pd(PPh3) (4) was determined. It crystallizes in the space group Cc with a = 21.474 (4) A?, b = 10.573 (1) A?, c = 22.954 (4) A?, β = 117.53 (1)°, V = 4621 (1) A?3, and Z = 4. The structure was refined to final R = 0.0341 and Rw = 0.0375 for 3566 reflections with Fo2 > 3σr(Fo2). The Mo atom has pseudooctahedral geometry, coordinated to two bridging PCy2 groups and four CO's. The Pd center has pseudo-trigonal-planar geometry and is coordinated to two bridging PCy2 ligands and a terminal PPh3 group. The Mo - Pd distance is 2.760 (1) A?, implying a metal-metal bond, and the MoPd(μ-PCy2)2 dihedral angle is 15.4°, reflecting steric interactions between phenyl and cyclohexyl groups.
