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Paper | Special issue | Vol 30, No. 2, 1990, pp.949-956
Published online, 1st January, 1970
DOI: 10.3987/COM-89-S92
Mass Spectrometry of Organogermanium Compounds. Fragmentation Process of 1-Germacyclohexane and Their Methyl Derivatives

Katsumi Tanaka and Yoshito Takeuchi*

*Department of Chemistry, The College of Arts & Sciences, The University of Tokyo, Komaba, Meguro-ku, Tokyo 153, Japan


The mass spectrometric fragmentation caused by electron impact of germacyclohexane, 3-methyl- and 4-methyl derivatives and their deuteratated species were analyzed. Intially the clevage of Ge-C bond took place, followed by loss of hydrocarbon moieties. The whole fragmentation processes can be explained by the combination of elimination of hydrocarbon moiety(neutral and radical) and hydrogen transfer(McLafferty rearrangement). The base peaks were at m/z 74 (germanium cation radical) in contrast to that of 1,1-dimethyl-1-germacyclohexanes at m/z 89.