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
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 ≅ fσ fπ = 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.