Comparative crystal-chemical analysis of simple sulfites and selenites and binary compounds

With the use of the TOPOS structural topological program package, comparative crystal-chemical analysis has been performed for anhydrous inorganic salts with pyramidal anions, namely, for 12 simple sulfites and 23 simple selenites. Comparative topological analysis has been carried out for simple sulfites and selenites and 1417 representatives of the topological types of binary compounds. This analysis shows that six sulfites and selenites are topologically similar to NaCl, NiAs, TiO₂ (rutile), and ZnTe. The topology and uniformity of the ionic matrices in all the structures are surveyed: in 10 of the 35 salts under consideration, at least one of the matrices has close packing topology.