Normal Vibrations and Urey-Bradley Force Constants of Methyl Amine

作者：Ellen L. Wu, Giuseppe Zerbi, Salvatore Califano, Bryce L. Crawford · 发表于：The Journal of Chemical Physics · 年份：1961 · DOI：10.1063/1.1732209 · 被引用次数：32 · 研究领域：Quantum, superfluid, helium dynamics、Molecular Spectroscopy and Structure、Advanced Chemical Physics Studies

Using least-squares fitting to the experimental frequencies, the Urey-Bradley force constants and their uncertainties have been calculated for methyl amine and deuterated derivatives. From the calculation, new assignments of the NH2 twisting vibrations are proposed: CH3NH2, 977 cm-1; CH3ND2, 744 cm-1; CD3NH2, 1078 cm-1; and CD3ND2, 701 cm-1. Potential-energy distributions of these four molecules are reported.