Abstract
The preparation of a range of derivatives from the compound ( R)(+)-Et(1-C 10H 7)PhGeH has led to the establishment of the stereochemistries of some nucleophilic substitutions at the germanium atom. For the reactions studied in both silicon and germanium systems, the stereochemistries are identical to those previously established for the Me(1-C 10H 7)PhSiX compounds. Contrary to results with the Me(1-C 10H 7)PhSiX compounds, the signs of the plain optical rotatory dispersion curves of Et(1-C 10H 7)PhGeX compounds above 320 nm do not show a simple correlation with the structures assigned on chemical grounds and by application of Brewster's Rules.
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