Repulsion parameters, interelectronic

Assignment of (he observed bands to these transitions, provides an estimate of B, the Racah interelectron repulsion parameter. Its value (Table 23.6) is invariably below that of the fiee-ion (1030cm ) because (he expansion of d-electron charge on complexation reduces the inteielectronic repulsions. 

The nephelauxetic effect calculation and accuracy of the interelectronic repulsion parameters /, cubic high spin d1, d3, d7 and d systems. E. Konig, Struct. Bonding (Berlin), 1971, 9, 175-212 (64). 

Konig E (1971) The Nephelauxelic Effect. Calculation and Accuracy of the Interelectronic Repulsion Parameters I. Cubic High-Spin d2, d, d and dg Systems. 9 175-212 Kopf H, see Hopf-Maier P (1988) 70 103-185... 

A2g transitions, respectively. Besides being able to correlate jS with oscillator strength,/, of transitions the values may be employed 42) to evaluate the effective charges on the Cr(III) ions in various complexes. Fig. 4 provides plots of the effective metal charge vs. /3, the nephelauxetic parameter and B, the Racah interelectronic repulsion parameter for chromium(III). Jorgensen... 

Fig. 4. Effective metal charge, Z, in chromium(III) complexes as a function of the nephel-auxetic parameter, P, and the Racah interelectronic repulsion parameter, B...

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