Showing papers by "Antony J. Deeming published in 2006"
TL;DR: The single-crystal XRD structures of 6, 7, 8, 10, 14 and 15 are reported and the mixed sulfur-selenium compounds are reported.
26 citations
TL;DR: The coordination chemistry of bis(di-ortho-tolylphosphino)methane (dotpm) has been studied as mentioned in this paper, and a range of low-valent mononuclear complexes have been prepared.
Abstract: The coordination chemistry of bis(di-ortho-tolylphosphino)methane (dotpm) has been studied. It is an excellent chelating ligand and a range of low-valent mononuclear complexes have been prepared; cis-[M(CO)(4)(eta(2)-dotpm)] (M = Cr, Mo, W; 1-3), [CpRuCl(eta(2)-dotpm)] (4), and cis-[MX2(eta(2)-dotpm)] (M = Pt, X = Cl, Br, I; 5a-5c, M = Pd, X = Cl; 6). The backbone protons are relatively acidic and can be deprotonated using n-BuLi or LiN(SiMe3)(2). Subsequent alkylation by RX (X = halogen; R = Me, Et, CH2Ph) affords cis-[M(CO)(4)(eta(2)-Rdotpm)] (M = Cr, Mo, W, R = Me; 7-9, M = Mo, W, R = Et, CH2Ph; 12-15), [CpRuCl(eta(2)-Medotpm)] (10), and cis-[PtI2(eta(2)-Medotpm)] (11). Thermolysis of cis-[Mo(CO)(4)(eta(2)-Medotpm)] (8) yields what is believed to be the coordinately and electronically unsaturated complex [Mo(CO)(3)(eta(2)-Medotpm)] (16), suggesting that derivatives of dotpm (cone angle 194 degrees) are bulky enough to stabilize a 16-electron complex. Crystal structures of 2, 3, 7-9, 13, and 14 have been determined (diphosphine bite angles ranging from 66.58(3)degrees to 70.96(5)degrees.
24 citations
TL;DR: In this paper, the X-ray structures for 1, 2 and 4 are reported, and structural and spectroscopic comparisons are made between these clusters and [Os-3(mu-H)(2)(CO)(8)(mu-L)] (L = dppm (5), dppe (6), dppp (7)).
14 citations