Chinese Journal of Magnetic Resonance

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A THEORETICAL STUDY ON C-H NUCLEAR SPIN-SPIN COUPLING CONSTANTS

LI Yong-jian, WAN Jian, ZHAN Chang-guo*   

  1. College of Chemistry, Central China Normal University, Wuhan 430079, China
  • Received:2003-01-07 Revised:2003-03-17 Published:2003-09-05 Online:2003-09-05
  • About author:*Correspondence author: Zhan Chang-guo, Tel: 027-67867963, E-mail:zhan@ccnu.edu.cn
  • Supported by:

    国家教育部高等学校骨干教师资助计划和波谱与原子分子物理国家重点实验室基金资助项目.

Abstract:

Based on ab initio HF/6-31G* calculations and the subsequent natural bond orbital analysis, a generalized semiempirical relationship has been tested t
o calculate C-H nuclear spin-spin coupling constants. It is demonstrated that the generalized relationship satisfactorily reproduces experimental 1JC-H  values for both cyclic and non-cyclic molecules.

Key words: NMR, nuclear spin-spin coupling constant,  s character, net atomic charge, correlation analysis

CLC Number: