115402-96-5Relevant articles and documents
(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.
