根据取代基对各类质子化学位移变化的影响。
On basis of the effect of substituents on the variation of the chem.
在此基础上讨论了溶液中样品的结构、取代基对其结构、构象的影响和取代基的化学位移规律。
The structure of samples in solution, the influence of R-substitution on conformation, and the rule of R-substituted chemical shifts were discussed.
对所有共振谱线进行了全面归属，并讨论了不同取代基和环内不同杂原子对化学位移值的影响。
All of the resonance lines were fully assigned and the effects of substituents and heteroatoms in ring on chemical shifts were discussed.
并讨论了苯环上不同取代基对冠醚环上各碳化学位移的影响。
The influences of benzine ring's different sub-stituets on the chemical shifts of crown's carbons are also discussed.
并讨论了苯环上不同取代基对冠醚环上各碳化学位移的影响。
The influences of benzine ring's different sub-stituets on the chemical shifts of crown's carbons are also discussed.
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