The asymmetric unit of the title compound 7,11- or oato-S:O)-7-(triphe
nylphosphine-P)-8,9:10,11-di-mu H-7-platina-nido-undecaborane-dichloro
-methane (1/0.5), C25H31B10OPPtS.0.5CH(2)Cl(2), contains two metallabo
rane molecules, which are approximate geometric isomers, and one molec
ule of dichloro-methane solvent. Each isomer has an exopolyhedral thio
benzoate ligand bridging one Pt and one B atom to give a five-membered
Pt-S-C-O-B ring.