Lande parameter

The Lande parameter ni in a system having spherical symmetry is essentially a one-electron operator quantity, as illustrated in Dr. Schmidtke s lecture (49). In a complex, the L. C. A. 0. M. O. description hence suggest that the new value of na (adapted to the lower Z due to central-field covalency) is multiplied by the square b representing the electronic density of the t2g sub-shell in MX6. Empirically, the dependence of ni is roughly a proportionality to Z, and we hence write... 

In the infra-red, most of /-level energy difference is due to spin-orbit coupling 191). Though the Lande parameter should be decreased half as much (proportional to the squared amplitude) as the parameters of interelectronic repulsion in a pure L.C.A.O. description, much evidence2140 is available that the Lande parameter varies less than half of (1 — p) from one compound to another. The difference (22007 — 6415 = 15592 cm-1) between the two /-levels 3P2 and 3F3 of Pr+3 does not depend on the Lande parameter and is decreased2151 to 14954cm-1 (p = 0.959 for... 

In many respect the fifteen acinides [Ac(Z = 89) to Fm(Z = 103)] with their 5/ configurations, are similar to their lanthanide counterpart. Thus the chemical properties like the extraction behaviour, complex formation and the spectroscopic properties often show close parallelism with those of the lanthanides. The Lande parameter, f5y, is some two to two and half times larger in the 5/series than in the corresponding 4/ series. As a result of this, the deviation from the Russell-Sauders coupling in the 5/ series is much more pronounced than in the 4/series. However, it has been shown earlier by Sinha 58) that the hydration entropies, enthalpies and the crystal parameters for the fluorides of the tri- and tetravalent actinides (Fig. 55, 56) also follow a linear L-dependence and give rise to the inclined W plots like those for the lanthanides. 

Lande parameter of spin-orbit coupling = quantum yield... 

However, the spin-orbit coupling is not negligible in Ce(III) the Lande parameter 5d is expected to be somewhat lower than 1100 cm since gaseous Ce shows D3/2 at 49737 and Dj/2 at 52226 cm above the ground state. Okada et al. (1985) used a parametrized model with the following results for the ethylsulfate crysteil ... 

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