CH/π Interaction on the Structure of<i>N</i>-Substituted-4-phenyltetrahydroisoquinoline Derivatives
作者:Hiroko Suezawa、Tomoaki Yuzuri、Yuji Kohno、Yoshitaka Yamaguchi、Masatoshi Asami
DOI:10.1246/bcsj.20090307
日期:2010.7.15
Rotational barriers about the C–N bonds and differences of ground state energies of tert-butyl 4-phenyltetrahydroisoquinoline-2-carboxylate derivatives were determined by NMR spectroscopy. The results are discussed assuming characteristic intramolecular CH/π interactions accompanied by results of X-ray structure analysis, ab initio MO, and DFT calculations. The calculated values with MP2/6-31G(d,p) level are in good agreement with the experimental results of X-ray structure analysis and NMR measurements.
通过核磁共振光谱测定了 4-苯基四氢异喹啉-2-甲酸叔丁酯衍生物的 C-N 键旋转障碍和基态能量差异。假设分子内 CH/π 相互作用具有特征性,并结合 X 射线结构分析、ab initio MO 和 DFT 计算结果对结果进行了讨论。MP2/6-31G(d,p) 水平的计算值与 X 射线结构分析和核磁共振测量的实验结果十分吻合。