Photoreactions of Cyclotetrasilane and Cyclotetragermane in the Presence of Azobenzenes

Abstract

Photoreactions of octaphenylcyclotetrasilane and azobenzenes give 1-(1, 2-diarylhydrazo)1, 2, 2, 3, 3, 4, 4-heptaphenyl-1, 2, 3, 4-tetrasila-1, 2, 3, 4-tetrahydronaphthalenes (1) and (2) in good yields which were identified by NMR spectra and/or X-ray crystal analysis. In the reaction of azobenzene with octaphenylcyclotetragermane, 1, 2, 3, 3, 4, 4, 5, 5, 6, 6decaphenyl-1, 2-diaza-3, 4, 5, 6-tetragermacyclohexane (3) is obtained.