Abstract Cationic Pt II–Ir III heterobimetallic complexes bridged by cyclooctane-1, 2-dithiolato ligands [(PPh 3) 2 Pt (μ 2-SRS) IrCl (η 5-Cp*)][SbF 6][R= cis-C 8 H 14 (5), trans-C 8 H 14 (6), Cp*= C 5 Me 5] were synthesized by reaction of (cyclooctane-1, 2-dithiolato) Pt II complexes [Pt (SRS)(PPh 3) 2][R= cis-C 8 H 14 (3), trans-C 8 H 14 (4)] with [IrCl (μ-Cl)(η 5-Cp*)] 2 in thf in the presence of AgSbF 6. The structures of complexes 5 and 6 were fully characterized ...