Chemistry Letters, Vol.37, No.5, 520-521, 2008
1,3-digermabicyclo[1.1.0] butane with an inverted bridge ge-ge sigma bond
1,3-Digermabicyclo[1.1.0]butane 2 was synthesized as yellow crystals. The molecular structure, C-13 NMR and UV-vis spectra, and theoretical calculations have revealed that 2 is a typical long bond isomer, similarly to the silicon congener 1. Structural comparison between 1 and 2 is achieved.