[The electrophilic and electrophobic effect in molecular vibration spectra].
A new point of view for electronic effect of molecular vibration spectra was brought: the electrophilic effect of substitution group can enhance the strength of covalent bond. Therefore, its stretching vibration frequency will be increased. Contrarily, electrophobic effect makes frequency decrease. As far as the coordination bond is concerned, if electrophobic substitution group links up the atom which provides the electron doublet then the strength of coordination bond will be enhanced and the stretching vibration frequency of the bond will be increased. The electrophilic substitution group makes the frequency decrease. If substitution group links with the atom that accepts electron, the electronic effect of substitution group is on the contrary.
Liu
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C
School of Material Science and Engineering, Tianjin University, 300072 Tianjin.
Li
R
R
Zhou
W
W
Li
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Y