Oxidation of a Pt 2 (µ-SO 2 ) moiety to µ-SO 3 and the crystal structure of [Pt 2 (µ-SO 3 )(µ-SO 2 )(C 8 H 12 ) 2 ]

Bis(cyclo-octa-1,5-diene)platinum(0) as a solid has been found to react immediately with SO2giving [Pt2(µ-SO2)2(C8H12)2], (1). N.m.r. spectroscopy reveals that the two C8H12 ligands in the dimer (1) have three co-ordinated olefinic groups with the remaining one not co-ordinated. The presence of µ-SO2 ligands is consistent with the i.r. spectrum. Solutions of complex (1) are oxidized slowly by atmospheric O2to give the novel µ-SO3 complex …