The Synthesis of Diethyl Ditelluride and the Raman and Infrared Spectra and Structures of Diethyl Dichalcogenides

Abstract

The Raman and infrared spectra of diethyl dichalcogenides were measured. These vibrational spectra fit D_3d selection rules, establishing that the molecules have the linear skeleton C-C-X-X-C-C. The lack of coincidence between Raman and infrared frequencies of skeletal vibrations strongly supports that the molecule has a center of symmetry. C₂H₅-Se-Se-C₂H₅ and C₂H₅-Te-Te-C₂H₅ were prepared by a modification of the methods for CH₃-Se-Se-CH₃ and CH₃-Te-Te-CH₃. The identify and purity of obtained materials were established by full assignment_#1 of the vibrational spectrum, chemical analysis_#2 and analysis of ¹H NMR²⁶.