Electrochemical Introduction of Diphenylgermylene Unit into Poly(dibutylgermylene)

Facile synthesis of linear poly(dibutylstannane)

“…Linear polymers of the type -(SnR 2 ) n -(polystannanes) are of potential interest because of their electrical properties. 1 This class of materials has been synthesized by three different methods (see overview in Table 1): i) via the Wurtz reaction from dialkyldichlorostannanes and sodium, which was reported to be poorly reproducible 2 and gives rise to a significant fraction of cyclic oligomers; [1][2][3][4] ii) electrochemical polymerization of dialkyldichlorostannanes yielding products comprising an unknown fraction of cyclic oligomers; 5,6 and iii) catalytic dehydropolymerization of dialkyldihydrostannanes, which usually has yielded mixtures containing a significant fraction of cyclic oligomers as byproducts that apparently could not be separated from the polymeric material. 1,[7][8][9][10][11][12][13][14] A linear poly(dibutylstannane), prepared with a platinum-containing catalyst, has been reported to be free of cyclic oligomers but indeed a number of other side products arose, which could be identified only partially.…”