Indol-1-yl- and pyrrol-1-yl-substituted compounds of silicon and phosphorus

Trichlorosilanes react with lithium indolide under formation of the mono- and bis(indol-1-yl)silanes C8H6N-SiCl(2)R (R = CMe(3) (1), Ph (2)) and (C8H6N)(2)SiCl-Ph (3). In the reaction of lithium pyrrolide (4) and 2 the mono- and bis(pyrrol-1-yl)silanes C8H6N-SiCl(Ph)-C4H4N (5) and C8H6N-Si(Ph)(C4H4N)(2) (6) are obtained. The bis(imidazol-1-yl)dimethylsilane 7 is formed in the reaction of the sodium derivative of imidazole and dichlorodimethylsilane. The successive substitution of the fluoro atoms of PF3 by indole leads to the mono-, bis- and tris(indol-1-yl)phosphanes 8-10. The addition of indole and the bis(trimethylsilyl)amino-trimethylsilyliminophosphane leads to the mono(indol-1-yl)-phosphane 11. The crystal structure of 10 is reported.