(Li, H) NMR and impedance spectroscopy methods are used to study the ion mobility and conductivity in a complex of the composition Li(NHCHCOO)(NO) (), which has a layered crystal structure. The character of ion motions in lithium and proton sublattices with temperature variation is considered; the types of motions and temperature ranges in which they occur are determined. It is found that above 350 K the dominant process in the lithium sublattice of the compound is Li ion diffusion. Possible migration paths of lithium ions in the lattice of the compound are analyzed. The specific conductivity of the compound is found to be 2.4×10 S/cm at 393 K.

Сrystals of the previously unknown polymorph of potassium tetrafluoroantimonate(III) (β-KSbF₄) are synthesized and their crystal structure is determined (orthorhombic crystal system: a = 8.1631(5) Å, b = 7.8563(5) Å, c = 6.5396(4) Å, V = 419.40(5) ų, Z = 4, d_calc = 3.751 g/cm³, F(000) = 424, space group Pmn2₁). The main structural units of β-KSbF₄ within the first coordination sphere are dimer complex [Sb₂F₈]^2– anions formed of trigonal SbF₄E and tetragonal SbF₅E bipyramids with a common vertex. The previously described α-KSbF₄ polymorph consists of tetrameric [Sb₄F₁₆]^4– complexes formed of SbF₅E bipyramids.

(NH₄)Sb₄F₁₃ crystals (I) are synthesized and their crystal structure (tetragonal crystal system: a = 9.6431(2) Å, c = 6.5503(2) Å, V = 609.11(3) ų, Z = 2, d_calc = 4.100 g/cm³, F(000) = 664, space group I4̅) is determined. The main structural units of I are tetranuclear anionic [Sb₄F₁₃]⁻ complexes and [NH₄]⁺ cations. The anionic complexes are built of four SbF₃ groups linked together by tetrahedral bridging fluorine atom. At room temperature the (NH₄)Sb₄F₁₃ crystals are isostructural to previously studied МSb₄F₁₃ (М = K, Rb, Cs, and Tl). The study of ^121,123Sb NQR spectra of compound I is performed in a range of 77-370 K, which shows that when the temperature decreases (<250 K) the substance exhibits piezoelectric properties, as do other compounds of this group, but with a violation of their isostructurality.

A binuclear complex of composition 2SbF3·(C2H5NO2) ( I) of antimony(III) with the γ-glycine amino acid is prepared. The antimony atoms in this complex are connected to each other by the amino acid...

The process of removal aluminum and cobalt ions from aqueous solutions with a phosphorus-containing product containing inositol hexaphosphoric acid derivatives obtained from rice production wastes of Far Eastern selection varieties – rice flour, and optimal conditions were determined. It is established that the efficiency of removal of metal cations by the phosphorus-containing product depends not only on their nature, but also on the initial concentration of ions in solutions. The degree of extraction of aluminum ions reaches 99%, and cobalt – 76%. The principal possibility of using phosphorus-containing products of plant origin in the development of environmentally safe materials for the removal of metal ions in technologies requiring the use of green chemistry methodology is proposed.