Crystal field splittings, thermodynamic

Wood B. I and Strens R. G. J. (1972). Calculation of crystal field splittings in distorted coordination polyhedra Spectra and thermodynamic properties of minerals. Min. Mag, 38 909-917. 

Evaluation of A Energy separations between resolved 3d orbital energy levels correspond to visible and near-infrared radiation. Measurements of absorption spectra of transition metal compounds and minerals are used to obtain A and to evaluate the CFSE of the ions. Crystal field splittings may also be estimated from plots of thermodynamic data for the first-series transition metal compounds. The magnitude of A depends on ... 

Chapter 5 summarizes the crystal field spectra of transition metal ions in common rock-forming minerals and important structure-types that may occur in the Earth s interior. Peak positions and crystal field parameters for the cations in several mineral groups are tabulated. The spectra of ferromagnesian silicates are described in detail and correlated with the symmetries and distortions of the Fe2+ coordination environments in the crystal structures. Estimates are made of the CFSE s provided by each coordination site accommodating the Fe2+ ions. Crystal field splitting parameters and stabilization energies for each of the transition metal ions, which are derived from visible to near-infrared spectra of oxides and silicates, are also tabulated. The CFSE data are used in later chapters to explain the crystal chemistry, thermodynamic properties and geochemical distributions of the first-series transition elements. 

Table 7.1. Crystal field splittings and stabilization energies of transition metal(II) compounds estimated from plots of thermodynamic data ...

George, P., and D. S. McClure, Progr. Inorg. Chem., 1959, 1, 38 (effects of crystal field splittings on thermodynamic properties of compounds). 

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