Copper(II)- and palladium(II)-catalyzed home-coupling reactions of trimethy
lstannyltetraselenafulvalene proceed smoothly to produce bitetraselenafulva
lene (biTSF) in good yield. The X-ray analysis of biTSF shows an interestin
g crystal structure. The CT-complex and radical cation salts derived from b
iTSF indicate fairly high electric conductivities. (C) 1999 Elsevier Scienc
e Ltd. All rights reserved.