120638-05-3Relevant 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
Reactions of M(CO)6 (M = Mo, W) with PPh2H and NaBH4
Keiter, Richard L.,Keiter, Ellen A.,Mittelberg, K. Neil,Scott Martin,Meyers, Victoria M.,Wang, Jin-Guu
, p. 1399 - 1403 (2008/10/08)
The reaction of M(CO)6 (M = Mo, W) with PPh2H and NaBH4 in high-boiling alcohols affords M(CO)5PPh2H (1), cis-M(CO)4(PPh2H)2 (2), fac-M(CO)3(PPh2H)3 (3), (OC)4M(μ-PPh2)2M(CO)4 (4), (OC)4M(μ-PPh2)2M(CO)3PPh 2H (5), trans-HPh2P(OC)3M(μ-PPh2) 2M(CO)3PPh2H (6), and cis-HPh2P-(OC)3M(μ-PPh2) 2M(CO)3PPh2H (7). Proper selection of the phosphine/metal carbonyl mole ratio optimizes the formation of 3, 5, or 6, and good yields of these products may be obtained. Complexes 1, 2, 4, and 7 are found as minor products. 31P NMR studies show that 1 and 2 are precursors to the phosphido-bridged complexes. A reaction sequence for the formation of observed products is proposed.
