Photoelectron spectroscopic and theoretical study ofmetallaborocycles

摘要

Metallabenzenes consist of a class of organometallic compounds in which one CHgroup in benzene is substituted by a metal atom.1 Various metallabenzenes have beensynthesized,showing interesting aromatic and organometallic properties.2Boron is known to form delocalized bonds due to its electron deficiency.Small boronclusters have been found to be planar and aromatic following the Huckel rules.3 Veryrecently,we reported the aromatic metallaboron analog of metallabenzenes,ReB6-.4 It isfound to possess a planar hexagonal structure with a central B atom and six delocalized πelectrons.