The study of the structure of the six-membered unsaturated N-heterocyclic silylene LSi: and related compounds by the methods of optical (Raman, IR, UV–vis) spectroscopy

Abstract

Electronic structure of the six-membered unsaturated N-heterocyclic silylene 1 was investigated by the experimental (Raman, IR, UV–vis) and theoretical methods of optical spectroscopy. The results obtained along with the refined NICS data confirm π-conjugated but not aromatic character of molecule 1 with its trans-diene fragment and participation of the vacant pz orbital of SiII atom in the conjugated system.