METHOD FOR PREPARING ORGANOCHLOROGERMANATES Russian patent published in 2005 - IPC

FIELD: chemistry of organoelemental compounds, chemical technology.

SUBSTANCE: invention describes a method for preparing organochlorogermanates of the general formula: R_nGeCl_4-n wherein n = 2, 3; R means aromatic radical C₆H₅, ClC₆H₄, MeC₆H₄, SC₄H₃. Method involves interaction of organochlorosilane with germanium tetrachloride in the presence of Lewis acid as a catalyst - aluminum chloride at heating. Method involves using organochlorosilanes of the general formula: R_nMe_mSiCl_4-(n+m) wherein R means C₆H₅, ClC₆H₄, MeC₆H₄, SC₄H₃; n = 1-4; m = 0-2; the mole ratio R_nMe_mSiCl_4-(n+m) : GeCl₄ = (1.5-4):1, at temperature 50-130°C, and in the amount of catalyst 0.05-0.3 mole per 1 mole of organochlorosilane. Invention provides preparing organochlorogermanates from cheap and available organochlorosilanes and enhancing yield of the end product.

EFFECT: improved preparing method.

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