211798-25-3Relevant academic research and scientific papers
Photochemistry of ring-coupled group VI bimetallic compounds I: Phosphine substitution without disproportionation. The molecular structures of Mo2(CO)5[P(C6H5)3] (μ-η5,η5-C5H4-CR2-C5H4).
Bitterwolf,Saygh, Abdel,Shade, Joyce E.,Rheingold, Arnold L.,Yap, Glenn P.A.,Liable-Sands, Louise
, p. 89 - 96 (1998)
Solution photolysis of ring-coupled bimetallic compounds of the formula M2(CO)6(μ-η5,η5-C5H4-CR2-C5H4), where M=Mo or W and R=H or CH3, in the presence of triphenylphosphine or trimethylphosphine yields simple substitution derivatives M2(CO)5L(μ-η5,η5-C5H4-CR2-C5H4) or M2(CO)4L2(μ-η5,η5-C5H4-CR2-C5H4). The compounds have been fully characterized by IR and NMR spectroscopy and elemental analysis. Phosphine ligands are found to occupy positions trans to the M-M bond. No evidence was found for disproportionation processes such as those found for similar reactions of the non-ring-coupled species. The molecular structures of two compounds have been determined: (μ-η5,η5-C5H4-CH2-C5H4) Mo2(CO)5(PPh3): monoclinic, P21/c, a=22.871(8), b=16.415(6), c=15.957(9) A, β=94.29(3)°, V=5974(4) A3, Z=8, R(F)=8.87%; (μ-η5,η5-C5H4-CH 2-C5H4)Mo2(CO)4 (PMe3)2: monoclinic, P21/c, a=9.843(5), b=15.343(7), c=31.514(6) A, β=97.28(3)°, V=4720(4) A3, Z=8, R(F)=4.38%.
