2-Diformylmethylene-1,3-diselenole was prepared and condensed with dithioli
um phoshonium bromides and dithiolium phosphonates in the presence of base
to. give dendralene-type vinylogs of TTF bearing a 1,3-diselenole moiety. T
he electrochemistry of these dendrimers was studied. SEEPR measurements wer
e also carried out. Calculations were carried out on the radical cations an
d correlated with the EPR values.