Reaction of tetrakis (2, 6-diethylphenyl) digermene (2) with diazomethane produces 1, 1, 2, 2-tetrakis (2, 6-diethylpheny1) digermirane (3). The photolysis of 3 with a high-pressure mercury lamp yields germene 13 and germylene 14. The digermirane 3 reacts with pyridine N-oxide, sulfur, and selenium to yield the insertion products of 0, S, and Se into the germanium-germanium bond. 2, 2, 3, 3-Tetrakis (2, 6-diethylphenyl)-1- ...