Thermal rearrangement of a 1,2-bis(silylene): Synthesis and crystal structure of a silyl-silylene

Abstract

Thermal rearrangement of the 1,2-bis(silylene), [{(4-ButPh)C(NDip)2}Si−]2 (Dip = 2,6-diisopropylphenyl, leads to the silyl-silylene, {(4-ButPh)C(NDip)2}Si−Si(H) {N(Dip)C(=NDip)(4-ButPh-H)}, via an intramolecular C−H activation reaction. The X-ray crystal structure, and limited spectroscopic data, for the compound are reported. The structure of the silyl-silylene incorporates an exocyclic imine fragment, which is unprecedented for this compound class.

Keywords

• silylene
• silyl-silylene
• bis(silylene)
• low-oxidation state
• x-ray crystallography