Double insertion of a platinum nucleophile into a closo-carbaborane: molecular structures of 4,4-(Et3P)2-1,7-Me2-1,4,7-CPtCB5H5 and 1,1-(Et3P)2-6,6-(Et3P)2-4,5-Me2-1,4,5,6-PtC2PtB5H5
Abstract
The carbaboranes closo-2,4-R2-2,4-C2B5H5(R = H or Me) react with [Pt2(µ-cod)(PEt3)4](cod = cycol-octa-1,5-diene) to afford the carbaplatinaboranes 4,4-(Et3P)2-1,7-R2-1,4,7-CPtCB5H5and 1,1-(Et3P)2-6,6-(Et3P)2-4,5-Me2-1,4,5,6-PtC2PtB5H5; the molecular structures of the two methyl derivatives have been established by X-ray diffraction.