A first photochemical bis-germylation of C-60 with digermirane

[GRAPHICS] In the photochemical bis-germylation of C-60 with 1,1,2,2-tetrakis(2,6 diet hylphenyl)-1,2-digermirane (1), a cycloadduct (2) is obtained in high yield for the first time. Spectroscopic analysis and theoretical investigation c onfirm that 2 (which has C-1 symmetry) results from 1,4-cycloaddition. Cont rol experiments and laser flash photolysis experiments suggest that an exci plex intermediate is responsible for the formation of 2. The redox properti es of 2 were examined by differential pulse voltammetry.