Pyrolysis of amines: Infrared spectrum of methyleneimine |
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Authors: | Yoshiaki Hamada Kazuko Hashiguchi Masamichi Tsuboi Yoshinori Koga Shigeo Kondo |
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Affiliation: | Faculty of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, Japan 113;National Chemical Laboratory for Industry, 1-1 Yatabe-machi-higashi, Tsukuba-gun, Ibaraki, Japan 305 |
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Abstract: | Methyleneimine was detected in the gas phase by a moderately high resolution infrared spectrometer as one of the intermediate species produced by a pyrolysis of amines. Observed vibrational frequencies of some isotopic derivatives have been combined with the ab initio values to reach a most reliable force constants set. Some other spectroscopic parameters, involving geometrical parameters and dipole moment derivatives, have also been calculated ab initio and compared with the observation. Its half-life in our experimental apparatus was about 10 min, which is much longer than the previously reported values, 0.1 or 10 sec. |
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