作者:Nobuhiko Kuze、Hitoshi Funahashi、Mamoru Ogawa、Hiroko Tajiri、Yasuhiro Ohta、Tsuyoshi Usami、Takeshi Sakaizumi、Osamu Ohashi
DOI:10.1006/jmsp.1999.7959
日期:1999.12
Abstract Microwave rotational spectra for normal and N -deuterated species of δ-valerolactam (2-piperidinone) were observed in the frequency range from 8 to 40 GHz. The spectra of the ground vibrational states for two isotopic species and the excited vibrational states for normal species were assigned, and the rotational constants (MHz) in ground vibrational state were determined using the Watson A
摘要 在 8 至 40 GHz 的频率范围内观察到 δ-戊内酰胺(2-哌啶酮)的正常和 N-氘代物质的微波旋转光谱。分配了两种同位素物质的基振动态光谱和正常物质的激发振动态,并使用 Watson A -reduced Hamiltonian 确定了基振动态的旋转常数 (MHz):A = 4590.96(11),对于正常物种,B = 2495.03(2),C = 1731.06(2),对于氘代物种,A = 4436.79(13),B = 2484.49(1),C = 1703.83(1)。将亚氨基氢原子的旋转常数和 rs 坐标与 MP2/6-31G( d , p ) 理论水平从 ab initio MO 计算得出的比较得出结论,指定的光谱是由于一半-椅子符合者。