Comment on “Disproving a Silicon Analog of an Alkyne with the Aid of Topological Analyses of the Electronic Structure and Ab Initio Molecular Dynamics Calculations”

Abstract

Bond order of a silicon-silicon bond (1): The statement that the recently synthesized compound RSiSiR (1) (RSi[C(SiMe3)3]2CHMe2) has rather a double than a triple bond is challenged. Arguments are given which support the interpretation of the bonding situation in terms of two donor–acceptor bonds which are enhanced by one π bond (see picture).