Summary: Silicon Compounds
Synthesis, Isolation, and Characterization of 1,1-DiGrignard and
Roman Dobrovetsky, Dmitry Bravo-Zhivotovskii,* Boris Tumanskii, Mark Botoshansky, and
Geminal dimetallosilanes have already proved their great
potential for the synthesis of novel silicon compounds.
However, the variety and number of isolated geminal
dimetallosilanes is very small.
For example, all known
geminal dimetallosilanes are alkali metal or mercury deriv-
Furthermore, only one example of a geminal
dimetallosilane with two different metals, that is, a mercury
bridged bis(silyllithium) species, was reported recently by our
This contrasts with the large variety of
available geminal dimetallorganic reagents, which are very
useful synthons in organic synthesis.