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<abstract language="eng">In this contribution a few new gold(I)phosphine complexes, [2-(PPh2)C6H4CO 2H]AuX (where X = Cl, SCN, Br3) and a similar gold(III) derivative [{2-(PPh2)C6H4CO 2H}AuIII Cl (C6H4CH2NMe2 )]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-(PPh2)C6H4CO 2H]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, beta = 99.95º(3), V = 2299 Å³, Z = 4 and R = 0.091. Biological tests for anti-fungal and anti-bacterial activity demostrate that [2-(PPh2)C6H4CO 2H]AuCl exhibits broad spectrum activity against a range of organisms

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