Moessbauer investigations of coordination symmetry of ferric hydroxoderivatives in alkaline matrix and solid phase

Moessbauer parameters for iron hydroxocomplexes (III) (IHC) in an alkaline matrix are compared with data for adsorbed complexes, for products of prolonged ageing in alkali of iron solid hydroxoderivatives (III), produced in slow polymerization IHC, and also of products their hydrolysis. NGR spectra are interpreted in terms of symmetry of coordination polyhedron of complexes in alkaline matrix (IHC) and in the solid phase (hydroxoferrate (III)). The symmetry is distorted in the IHC adsorption on nickel hydroxides