Synthesis of nido- and closo-diplatinacarborane complexes by direct insertion; crystal and molecular structures of closo-2,3-[(Et3P)2]2-1,2,3,6-CPt2CB5H7, nido-µ(4,8)-[(Me3P)2Pt]-8,8-[(Me3P)2]-7,8,10-CPtCB8H10 and nido-8,8-[(Me3)2]-7,8,10-CPtCB8H10.

Abstract

Reaction of closo-2,4-C₂B₅H₇ with [Pt(styrene)-(PEt₃)₂] affords closo-2,3-[(Et₃P)₂]₂-1,2,3,6 -CPt₂CB₅H₇, whereas [Pt(1,5-C₈H₁₂)(PMe₃)₂] and 1,6-C₂B₈H₁₀ gives nido-µ(4,8)-[(Me₃P)₂]- 7,8,10-CPtCB₈H₁₀ which on treatment with activated charcoal affords, nido-8,8-[(Me₃P)₂]-7,8,10-CPtCB₈H₁₀; the structural identity of the complexes was established by X-ray crystallography.