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Síntese e caracterização de cloro[ácido 2-(difenilfosfino)benzóico]-ouro(I) e alguns de seus derivados

1998; Brazilian Chemical Society; Volume: 21; Issue: 5 Linguagem: Inglês

10.1590/s0100-40421998000500006

1678-7064

B. P. Howe, R. V. Parish, R.G. Pritchard,

Metal complexes synthesis and properties

SYNTHESIS AND CHARACTERIZATION OF NEW GOLD (I) PHOSPHINE COMPLEXES.In this contribution a few new gold(I)phosphine complexes, [2-(PPh 2 )C 6 H 4 CO 2 H]AuX (where X = Cl, SCN, Br 3 ) and a similar gold(III) derivative [{2-(PPh 2 )C 6 H 4 CO 2 H}Au III Cl (C 6 H 4 CH 2 NMe 2 )]Cl have been synthesised and characterised.The phosphine, 2-(diphenylphosphino)benzoic acid, has been employed for the first time in gold chemistry.This ligand is potentially bidentate through bonding of the phosphine and carboxylate groups.The X-ray structure of the complex chloro[2-(diphenylphosphino) benzoic acid]gold(I) has been elucidated and the bond lengths encountered show great similarity to those of chloro(triphenylphosphine)gold(I).[2-(PPh 2 )C 6 H 4 CO 2 H]AuCl crystallises in the space group P2 1 /c with a = 9.113(2) Å, b = 10.925(2)Å, c = 23.069(4)Å, β = 99.95o (3), V = 2299 Å 3 , Z = 4 and R = 0.091.Biological tests for anti-fungal and anti-bacterial activity demostrate that [2-(PPh 2 )C 6 H 4 CO 2 H]AuCl exhibits broad spectrum activity against a range of organisms.