Rapid reversible borane to boryl hydride exchange by metal shuttling on the carborane cluster surface.

ABSTRACT: In this work, we introduce a novel concept of a borane group vicinal to a metal boryl bond acting as a supporting hemilabile ligand in exohedrally metalated three-dimensional carborane clusters. The (POBOP)Ru(Cl)(PPh₃) pincer complex (POBOP = 1,7-OP(i-Pr)₂-m-2-carboranyl) features extreme distortion of the two-center-two-electron Ru-B bond due to the presence of a strong three-center-two-electron B-H···Ru vicinal interaction. Replacement of the chloride ligand with a hydride afforded the (POBOP)Ru(H)(PPh₃) pincer complex, which possesses B-Ru, B-H···Ru, and Ru-H bonds. This complex was found to exhibit a rapid exchange between hydrogen atoms of the borane and the terminal hydride through metal center shuttling between two boron atoms of the ca

SUBMITTER: Eleazer BJ 

PROVIDER: S-EPMC5609532 | biostudies-literature | 2017 Aug

REPOSITORIES: biostudies-literature