Access to a Variety of Ge(II) and Sn(II) Compounds through Substitution of Hypersilyl Moiety
Milan Kumar Bisai, V. S. Ajithkumar, Rajesh G. Gonnade, Sakya S. Sen
Abstract
We have prepared amidinato-germylene (3) and -stannylene (4) with a tris(trimethylsilyl)silyl substituent and subsequently substituted the hypersilyl moiety by reacting 3 with chlorophosphines, which led to phosphino germylenes (5 and 6) with concomitant liberation of (Me3Si)3SiCl. Exploiting the fluoride affinity of the silicon atom, we have prepared pentafluoropyridyl germylene (7) and -stannylene (8) by reacting 3 and 4 with C5F5N with simultaneous elimination of (Me3Si)3SiF. These are the first examples of aryl germylenes or stannylenes prepared via C–F bond activation of a perfluoroarene. The reaction of 4 with Me3NO resulted in a novel Sn2O2 ring (9). All compounds were characterized by single-crystal X-ray structure determination studies.