115402-97-6Relevant academic research and scientific papers
(Diphenylphosphine)-, (diphenylphosphido)-, and (diphenylphosphinito)gold(I) complexes. Crystal structure of [(PPh3)2N][Au{P(O)Ph2}2]
Vicente, José,Chicote, María Teresa,Jones, Peter G.
, p. 4960 - 4964 (2008/10/08)
[AuX(thtp)] (thtp = tetrahydrothiophene) reacts with PPh2H 1:1 to give [AuX(PPh2H)] (X = Cl (1) or Br (2)) or 1:2, in the presence of excess of NaClO4·H2O, to give [Au(PPh2H)2]ClO4 (3). A new high yield synthesis of the polymer [AuPPh2]n is reported by addition of concentrated aqueous ammonia to the solution obtained from a 1:1 mixture of [AuCl(thtp)] and PPh2H in dichloromethane. Q[AuX2] reacts with [AuPPh2]n(1:1)to give Q[(AuX)2-(μ-PPh2)] (Q = (PPh3)2N = bis(triphenylphosphoranyliden)ammonium, X = Cl (4a), Br (5a), I (6); Q = Bu4N, X = Br (5b)). [AuCl(thtp)] reacts with PPh2H and Proton Sponge (bdan = 1,8-bis(dimethylamino)naphthalene) (2:1:1) to give [Hbdan] [(AuCl)2(μ-PPh2)] (4b). [(PPh3)2N] [Au(acac)2] (Hacac = acetylacetone) reacts with PPh2H (1:2) to give, after air oxidation, [(PPh3)2N] [Au{P(O)Ph2}2] (7). The crystal structure of 7 was determined at 178°K (C60H50AuNO2P4, monoclinic, C2/c, a = 17.299(5), b = 12.487(4), c = 22.863(9) A?, β = 91.47(3)°; Z = 4). 7 shows exactly linear coordination at the gold atom, which lies on a center of symmetry. The P - Au bond length (2.324(2) A?) is significantly greater than in Bu4N[(AuBr)2(μ-PPh2)] and the P=O bond distance (1.499(4) A?) is similar to typical values for phosphine oxides.
Gold(I) Complexes derived from Secondary Phosphines: , (-), , and (+). Crystal structure of
Dyson, David B.,Parish, R. V.,McAuliffe, Charles A.,Pritchard, Robin G.,Fields, Roy,Beagley, Brian
, p. 907 - 914 (2007/10/02)
The interaction of secondary phosphines with a variety of gold(I) compounds has been studied.In the presence of bases or polar solvents, polymeric gold(I) phosphides are formed.When these are obtained in the absence of additional ligands they are soluble, presumably with ring structures.More usually, insoluble forms are found, presumably with chain structures.The probable formation of these materials from complexes of the type is discussed, and the isolation of the latter complexes (X=Cl or Br, R=Ph or p-tolyl) and of the novel monomeric phosphido-bridged anion (-) is described.In non-polar solvents a series of secondary phosphine complexes is formed, (+) (n=2-4), but that with n=3 appears to be unstable to disproportionation.The compounds are characterised by (31)P n.m.r. and (197)Au Moessbauer spectroscopy, and X-ray crystallography in the case of .
