Reactions of the dinuclear platinum(II) sulfide complex [Pt 2 (μ-S) 2 (PPh 3 ) 4 ] with a range of gold(III) dichloride complexes [AuLCl 2 ] containing C, N- or N, N-cycloaurated ligands L gives a new series of dicationic adducts [Pt 2 (μ-S) 2 (PPh 3 ) 4 AuL] 2+ , isolated as their PF 6 − salts. The complexes investigated are [Au{C 6 –H 4 (CH 2 NMe 2 )-2}Cl 2 ], [Au{C 6 H 3 (CH 2 NMe 2 )-2-(OMe)-5}Cl 2 ], [Au{NC 5 H 4 (CH 2 C 6 H 4 )-2}Cl 2 ], [Au{NC 5 H 4 (COC 6 H 4 )-2}Cl 2 ] and [Au{NC 5 H 4 (CONH)-2}Cl 2 ]. An X-ray structure determination on the picolinamide-derived complex [Pt 2 (μ-S) 2 (PPh 3 ) 4 Au{NC 5 H 4 (CONH)-2}](PF 6 ) 2 was not of sufficiently high quality for detailed discussion, but confirmed the atom connectivity. Reactions of [Pt 2 (μ-S) 2 (PPh 3 ) 4 ] with [AuCl 2 (bipy)]PF 6 (L=bipy=2,2’-bipyridine) and [AuCl 2 (phen)]Cl (L=phen=1,10-phenanthroline) gives the corresponding tricationic adducts [Pt 2 (μ-S) 2 (PPh 3 ) 4 AuL] 3+ , also isolated as their PF 6 − salts. The complexes are characterised by NMR spectroscopy, electrospray mass spectrometry and microelemental analyses. Biological assay data of a selection of these new complexes towards the P388 murine leukemia cell line, as well as a range of antimicrobial tests, reveals overall low activity compared to other cycloaurated gold(III) complexes.