@article{oai:u-ryukyu.repo.nii.ac.jp:02005237, author = {外間, 宏三 and 与儀, 誠一 and 比嘉, 松武 and Hokama, Kozo and Yogi, Seiichi and Higa, Matsutake}, issue = {28}, journal = {琉球大学理学部紀要, Bulletin of the College of Science. University of the Ryukyus}, month = {Nov}, note = {The mass spectra of 7,7-Bis (ethoxycarbonyl)-2,5-diphenyl-3,4-diazanorcaradiene were examined, and their typical fragmentation patterns were discussed on the basis of the observed fragment ion and metastable ion peaks. In the first step of cleavage of the molecular ions, the elimination of benzonitrile, ethoxycarbonyl and phenylacetylene occurred., 紀要論文}, pages = {63--68}, title = {7,7-Bis(ethoxycarbonyl)-2,5-diphenyl-3,4-diazanorcaradieneの質量スペクトル}, year = {1979} }