10.1039/DT9850001677
The research focuses on the synthesis and characterization of heterobimetallic and unsymmetrical diplatinum complexes derived from cis-[PtR,(dppm-P),] compounds, where dppm is Ph2PCH2PPh2 and R represents various organic groups. The purpose of the study was to explore the potential of these complexes for systematic synthesis of bimetallic compounds with a cis configuration around platinum, which would provide greater metal-metal separations and different conformational behavior compared to complexes with a trans configuration. The researchers successfully synthesized and characterized a series of complexes, including [(C6H4Me-o)2Pt(p-dppm)2PtMe2], [Me2Pt(p-dppm)2AgI], [Me2Pt(p-dppm)2AuCl], and [Me2Pt(p-dppm)2Ag]PF6, among others. The conclusions were drawn from detailed structural analysis, including X-ray diffraction studies, which confirmed the cis square-planar coordination at both platinum atoms and revealed the twist saddle conformation of the eight-membered R,P,C, ring. The study provided insights into the structural and conformational preferences of these complexes, with the Pt-Pt separation being the largest internuclear distance reported for a binuclear dppm complex.