Metastable Decompositions of gem-Dimethoxyalkanes, (RR'C(OCH_3)_2), upon Electron Impact. II. 1,1-and 2,2-Dimethoxypropanes

摘要

Unimolecular metastable decompositions of 1,1-dimethoxypropane (CH_3CH_2CH(OCH_3)_2, 1)and 2,2-di- methoxypropane ((CH_3)_2(OCH_3)_2, 2)upon electron impact have been investigated by means of mass-analyzed ion kinetic energy (MIKE) spectrometry and D-labeling technique. The moecular ions of 1 and 2, even at 20eV electron energy, are formed with extremely low abundance.