Bond lengths between aluminium and different complex ions

Abstract

Using crystal field theory and experimental data for maxima in photoexcitation spectra in anodic alumina formed by dc anodization in different electrolytes, it is shown that the bond length between Al3+ and complex ions (SO42-, PO43-, CrO42-, etc. incorporated into the alumina during the anodizing process, depends on the charge or dipole moment of the ligand and the symmetry of the environment.