カルベン配位子を用いた新しい低配位ケイ素化合物の化学

抄録

Carbene ligands such as N-heterocyclic carbenes (NHC) and cyclic alkyl(amino)carbenes (cAAC) have been utilized for the synthesis of low-coordinated silicon compounds. The reduction of NHC- and cAAC-coordinated silicon tetrachlorides 2 and 7 gives unique silicon compounds 3-5 and 8-12, respectively. These studies should be important from the viewpoint of the isolation of the reactive small molecules such as Si₂ and SiCl₂. The properties of the central silicon fragments of NHC derivatives 3-5 and cAAC derivatives 8-12 are different from each other reflecting the stronger π-accepting character of cAAC compared with that of NHC.