Reaction of bis(triethylphosphine)platinum and pentakis(t-butyl isocyanide)ruthenium with dicarba-nido-hexaboranes(8): molecular structures of [nido-µ4,5-{trans-(Et3P)2Pt(H)}-µ5,6-H-2,3-C2B4H6], [closo-1,1-(Et3P)2-2,3-Me2-1,2,3-PtC2B4H4], and [RuH(ButNC)5]+[nido-2,3-Me2-2,3-C2B4H5]–

Abstract

Reaction of [Pt(PEt₃)₂] with nido-2,3-C₂B₄H₈ or nido-2,3-Me₂-2,3-C₂B₄H₆ affords, respectively, [nido-µ_4,5-{trans-(Et₃P)₂Pt(H)}-µ_5,6-H-2,3-C₂B₄H₆] and [nido-µ_4,5-{trans-(Et₃P)₂Pt(H)}-µ_5,6-H-2,3-Me₂-2,3-C₂B₄H₄], which on pyrolysis yield closo-platinacarbaboranes with nonadjacent and adjacent carbon atoms respectively; in contrast [Ru(Bu^tNC)₅] reacts with nido-2,3-Me₂-2,3-C₂B₄H₆ to give[RuH(Bu^tNC)₅]⁺[nido-2,3-Me₂-2,3-C₂B₄H₅]^–.