Electronic Ion Polarizability, Optical Basicity and Metal (or Nonmetal) Binding Energy of Simple Oxides.

Abstract

A suitable relationship between free-ion polarizability and metal (or nonmetal) outermost binding energy has been searched on the basis of the similarity in physical nature between electron binding energy and ionization energy. It has been suggested that outermost core-level binding energy can be used for relative measuring the cation polarizability. In general, cation polarizability increases with decreasing metal (or nonmetal) binding energy. Highly polarizable cations possess low outermost binding energy. Simultaneous ly, a systematic periodic change of the polarizability against the binding energy has been observed in the isoelectronic series. A decreasing of metal (or nonmetal) binding energy in XPS spectra of simple oxides is accompanied with decreasing of O1s binding energy, that is related to increased basicity. This could be ex plained on the basis of enhanced interaction between outermost metal core level and O2p orbitals responsi ble to increased electron donor ability of oxide ion.

Approach to thermal properties and electronic polarizability from average single bond strength in ZnOBi2O3B2O3 glasses

“…That is, in general, cation polarizability increases with decreasing metal (nonmetal) binding energy. They also found that a decreasing of metal binding energy in XPS spectra of simple oxides is accompanied with decreasing of O1s binding energy, that is related to increased optical basicity [29]. A relation between metal binding energy and O1s binding energy has been established in Sb 2 O 3 -B 2 O 3 and Bi 2 O 3 -B 2 O 3 glasses [27,30].…”

“…5-8 for xZnO10Bi 2 O 3 -(90 À x)B 2 O 3 glasses, therefore, indicate that all binding energies corresponding to the B1s, Zn2p 3/2 , Bi4f, and O1s core level tend to decrease with increasing ZnO or the substitution of ZnO for B 2 O 3 . Dimitrov and Komatsu [29] suggested that outermost corelevel binding energy in simple oxides can be used for relative measuring the cation polarizability. That is, in general, cation polarizability increases with decreasing metal (nonmetal) binding energy.…”

Classification of Simple Oxides: A Polarizability Approach

“…According to Ref. (9), a systematic periodic change of the polarizability against the binding energy has been observed in the isoelectronic series. It has been suggested that outermost core-level binding energy can be used for relative measure of the cation polarizability.…”

“…Recently, on the basis of the similarity in the physical nature of the ionization energy (IE) and binding energy (BE), Dimitrov and Komatsu (9) have found that in the case of a large number of simple oxides generally cation polarizability increases with decreasing metal (or nonmetal) binding energy. The term metal (or nonmetal) binding energy (E ) was introduced to denote both binding energy of the outermost orbital of a cation in an oxide (E ) as well as the binding energy of the same orbital in the corresponding pure element (E ).…”

“…Searching for such a relation, Dimitrov and Komatsu (9) have established that a decrease of metal (or nonmetal) binding energy in XPS spectra of simple oxides is accompanied by a decrease of O 1s binding energy that is related to increased basicity. This statement means that generally oxides such as B O , P O , SiO , and Al O with high metal (or nonmetal) binding energy in the range 60}200 eV possess high O 1s binding energy between 533.5 and 530.5 eV (see Table 3a).…”