Covalency from Quadrupole Coupling in ABCl₃ Systems

William B. Euler, Leonard E. Mohrmann, Jr., Barry B. Garrett, Journal of Magnetic Resonance, 1979, 35, 185 – 192

Abstract

The use of nuclear quadrupole data to determine covalency parameters is examined here. The empirical method considers both covalent and lattice contributions to the electric field gradient. In this first report for CsCoCl₃, we find n_– ≅ f_σ – f_π = 0.055 and a Sternheimer factor S = 27. The results in a series of ABCl₃ compounds are compared to other methods for estimating covalency parameters.

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