The barrier to rotation about the selenium–selenium bond in diselenides. A dynamic n.m.r. study
Abstract
The barrier to rotation about the selenium-selenium bond in phenyl benzyl diselenide PhSeSeCH2Ph is determined to be 6.3 kcal mol–1†; as indicated by changes in the proton n.m.r. spectrum at low temperatures; theis is ca. 1.4 kcal mol–1 lower than the barrier in phenyl benzyl disulphide PhSSCH2Ph.