Electronic oxide polarizability and optical basicity of simple oxides. I

Abstract

The average electronic oxide polarizability α0 2− of numerous single component oxides has been calculated on the basis of two different properties: linear refractive indexn 0 and energy gapE g , which have demonstrated remarkable correlation. The optical basicity Λ of the oxides has been estimated on the basis of average electronic oxide polarizability calculated from the refractive index Λ(n 0) and the energy gap Λ(E g ). A good agreement has been observed between the optical basicity data obtained using independent initial quantities. The simple oxides have been separated into three groups according to the values of their oxide polarizability. The α0 2− values (above 3 Å) obtained for PbO, Sb2O3, and Bi2O3 have been attributed to the high cation polarizability and the presence of a lone pair in the valence shell of the cation.