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Nuclear quadrupole coupling constants of halogenated hydrocarbons and their relation to the natural hybrid orbitals

✍ Scribed by Yong Zhang; Lin-Feng Li; Xiao-Zeng You


Publisher
John Wiley and Sons
Year
1994
Tongue
English
Weight
334 KB
Volume
32
Category
Article
ISSN
0749-1581

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✦ Synopsis


Abstract

The natural hybrid orbitals of halogen atoms in various halogen‐substituted alkanes and benzenes have been calculated by the Fenske–Hall MO SCF method and natural hybrid orbital theory. Four consistent parameters i, s, d and π are derived to describe the nuclear quadrupole coupling constant (QCC) of the halogen isotopes ^35^Cl, ^81^Br and ^127^I, with modification by the asymmetry parameter η. A semi‐empirical expression is proposed from a different point of view.