Palladium and Platinum η~2 -Disilyne Complexes Bearing an Isolable Dialkyldisilyne as a Ligand

摘要

In the last decade, the chemistry of silicon-silicon triply bonded compounds (disilynes) has extensively developed since silyl- and aryl-substituted disilynes 1a-1cand 2 are available as stable compounds (Scheme 1). The detailed studies of disilynes unveiled that the silicon-silicon triple bonds adopt a trans-bent structure with two non-degenerate π, bonds, these are the in-plane slipped π bond (π_(in)) and out-of-plane it bond (π_(out)), and the corresponding anti-bonding π_(in)* and π_(out)* orbitals as shown in Scheme 1 b in contrast to alkynes which have two degenerated and orthogonal π(C=C) bonds.