Optical basicity and ionic conductivity

Perhaps the first attempt to involve the influence of chemistry on 

Bi ions dissolved in a given compound compared to the same energies in CaO, which are taken as standards. Thus A, the optical basicity is defined as the ratio of the electron donating capacity of the compound to the electron donating capacity of CaO, 

A of mixed oxides as in glass compositions are often expressed as weighted sums of the optical basicities of the constituent oxides, weighted by their equivalent fractions. 

Therefore the observed dependence of activation barriers on A suggests that during its actual motion in the glass, the cation may carry a positive charge less than its formal charge. Shastry et al. (1993) have shown that the optical basicity in principle should vary as a function of Mx, where x is molecular electronegativity of the given compound, Xi x v) = [Z A) They have also shown that when the same 

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