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13C and 119Sn NMR spectra of diphenyl- and dibenzyltin(IV) compounds have been studied in solutions of coordinating and non-coordinating solvents. Regions of values of the δ(119Sn) chemical shifts have been determined which characterize individual types of coordination of the central tin atom. The values of 13C NMR spectral parameters, the δ(13C) chemical shifts and nJ(119Sn, 13C) coupling constants, have been used to describe the real shapes of coordination sphere of the central tin atom and to discuss the internal structure of the organic substituents and of the nature of their bonding linkage to the tin atom.

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Stoichiometry and kinetics of decomposition of ferricenium compounds have been studied in alkaline medium. The reaction stoichiometry depends on type of the ferricenium compound. The decomposition rate of ferricenium ions is affected significantly by the presence of anions of inorganic salts with which ferricenium ion forms relatively stable complexes. From time course of the reaction probable mechanism of the decomposition process has been suggested, and its kinetic parameters have been determined.