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"

(Figure presented) Bond order of a silicon-silicon bond (1): The statement that the recently synthesized compound RSi-SiR (1) (R=Si[C(SiMe ₃)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).