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XIX. Nuclear Quadrupole Resonance Spectroscopy in Solids
Author(s) -
Vega Shimon
Publication year - 1977
Publication title -
israel journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.908
H-Index - 54
eISSN - 1869-5868
pISSN - 0021-2148
DOI - 10.1002/ijch.197700035
Subject(s) - nuclear quadrupole resonance , electric field gradient , quadrupole , chemistry , coupling constant , asymmetry , tensor (intrinsic definition) , spectroscopy , atomic physics , resonance (particle physics) , field (mathematics) , coupling (piping) , nuclear magnetic resonance spectroscopy , nuclear magnetic resonance , physics , quantum mechanics , stereochemistry , mechanical engineering , mathematics , pure mathematics , engineering
In these lecture notes some basic aspects of Nuclear Quadrupole Resonance (NQR) spectroscopy are presented. The parameters of the Electric Field Gradient (EFG) tensor which are obtained from NQR experiments are discussed. The theory of Townes and Dailey is used for the derivation of the expressions for the occupation numbers of electronic wave function of sp n hybridized atoms in terms of the asymmetry parameter η and the nuclear quadrupole coupling constant eq . The point‐charge model is applied in order to obtain the possible sp 2 and sp 3 configurations for which η = 1.