We present a new synthetic method for the bis(dimethyl)phosphines (PCP)-P-Me4 (C6H4-2,6-(CH2P(CH3)(2))(2)) and DMPE ((CH3)(2)PCH2CH2P(CH3)(2)) that starts from an aminophosphine, Et2NPMe2. Two equivalents of Et2NPMe2 react with the corresponding bis(alkyl bromide) to afford an oxygen- and moisture-stable aminophosphonium salt. NaAlH4 selectively reduces the aminophosphonium salt to the desired phosphine. Each step is high yielding and requires minimal purification.
H<sub>2</sub> addition to (<sup>Me4</sup>PCP)Ir(CO): studies of the isomerization mechanism
作者:Travis T. Lekich、J. Brannon Gary、Sarina M. Bellows、Thomas R. Cundari、Louise M. Guard、D. Michael Heinekey
DOI:10.1039/c8dt02861c
日期:——
In particular, isomerization from cis-(R4PCP)Ir(H)2(CO) to trans-(R4PCP)Ir(H)2(CO) is more facile when R = Me than when R = iPr. Deuterium incorporation in the hydride ligands from solvent C6D6 was observed during this isomerization when R = Me. This deuterium exchange has not been observed for other analogous R4PCP iridium complexes. A kinetic study of the cis/trans isomerization combined with computational
Complexes of 1,3-bis(dimethylphosphinomethyl)benzene with nickel(II), paladium(II) and iron(II) halides
作者:Colin S. Creaser、William C. Kaska
DOI:10.1016/s0020-1693(00)88995-1
日期:1978.1
METAL COMPLEXES
申请人:Eastham Graham Ronald
公开号:US20090312561A1
公开(公告)日:2009-12-17
The invention concerns metal complexes and their preparation, in particular a metal complex MLnXm, where M is a metal of group 8, 9 or 10 and X is a halide, HCO3—, NO3—, CO32— or carboxylate. n is a number equal to or less than the coordination number of the metal and m is 1 or 2 and is equal to the oxidation state of the metal. The ligand L may be a bidentate phosphine of formula (I), (II), (III) or (IV) as set out herein. The process of production comprises reacting an ammine compound of metal M with a complexing compound, which is preferably a phosphine.
US8445711B2
申请人:——
公开号:US8445711B2
公开(公告)日:2013-05-21
Transfer-dehydrogenation of alkanes catalyzed by rhodium(I) phosphine complexes
作者:Kun Wang、Martin E. Goldman、Thomas J. Emge、Alan S. Goldman
DOI:10.1016/0022-328x(96)06116-5
日期:1996.7
much greater temperatures. Analogs with halides other than chloride (Br, I), or with pseudo-halides (OCN, N3), are found to exhibit generally similar behavior: high catalytic activity under H2 and measurable but much lower activity in the absence of H2. Thermolysis (under argon) of complexes [RhL2Cl]n (n = 1, 2; L is a phosphine bulkier than PMe3) in cyclooctane in the absence of hydrogen acceptors yielded