Formation of closo- and nido-metallocarboranes from closo-C2B9 and -C2B7 carborbranes; molecular structures of closo-1,1-(Me2PhP)2-2,4-Me2-1,2,4-PtC2B9H9 and nido-10,10-(Et3P)2-2,8-Me2-10,2,8-PtC2B7H7
Abstract
Reaction of closo-1,6-Me2-1,6-C2B7H7 with [Pt(Et3P)3] affords nido-10,10-(Et3P)2-2,8-Me2-10,2,8-PtC2B7H7, a stereochemically non-rigid molecule; the structural identity of closo-1,1-(Me2PhP)2-2,4-Me2-1,2,4-PtC2B9H9 and the nido-metallocarborane are established by X-ray crystallography.