Tetrakis (Deuteriomethyl) Tetraselenafulvalene

Abstract
The preparation of >99% D tetramethyl tetraselenafulvalene is described. The synthesis involves hydrogen deuterium exchange of biacetyl followed by conversion to d7-3-chloro-2-butanone. The latter was transformed to the title compound via known procedures. The physical properties of the salts (d12-TMTSF)2 PF 6 and (d12-TMTSF)2 ClO4 are reported.