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用分子的电子结构解释化合物的各种物理化学行为,是当代理论化学的重要任务.量子力学还仅限于对π电子体系的研究,对σ电子体系则显得无能为力.介电子沿σ键的移动是遵守静电法则的,所以根据分子中原子或基团的静电诱导效应解释分子中结构与化合物的性质的关系已有不少报道,例如英国学派所拟定的化学活性次序、Taft 极性取代常数,以及做为评价诱导效应的标尺的相对电负性和蒋明谦等的饱和烃及其衍生物的基团诱导效应指数.
It is an important task of contemporary theoretical chemistry to explain the physicochemical behavior of compounds with the electronic structure of molecules. Quantum mechanics is still limited to the study of π electron system and powerless to σ electron system. According to the static law, so according to the electrostatic induction of atoms or groups in the molecule to explain the relationship between the structure and the nature of the compound has been reported, such as the British school of chemical activity order, Taft polarity substitution constant, and As a measure of the induction effect of the scale of the relative electronegativity and Jiang Mingqian and other saturated hydrocarbons and their derivatives group induced effect index.