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Information × Registration Number 0217U001195, 0116U002521 , R & D reports Title Polyoxomolybdates and polyoxotungstates with single, double, and triple charged metal cations for the development of new materials popup.stage_title Head Rozantsev Georgii M., Доктор хімічних наук Registration Date 27-01-2017 Organization Donetsk State University popup.description2 A systematic study of complex formation in heteropoly metalonickelate-anions solutions allowed us to propose a model that describes the state of ions in solutions of Ni2+-MoO42--H+(Z=1,00)-H2O and build distribution diagrams in the range of acidity Z=?(H+)/?(MoO42-)=0.6-2.5, allowing to establish the optimum Z area for the synthesis of salts with the necessary anion; calculate the logarithms of the concentration and thermodynamic formation constants (lgKs, lgK0) and standard Gibbs energy ?G0f for the reactions of formation of heteropoly anions with Anderson structure. Substitution neodymium for samarium in the compounds Nd5Mo3O16 has been investigated by X-ray diffraction, IR-spectroscopy, scanning electron microscopy. It was shown that solid solution Nd5-xSmxMo3O16 with fluorite-related structure is formed in the range up to x=3. Specific conductivity increase with increasing of samarium containing in the range up to x=1. Crystal structure refinement of Nd4SmMo3O16 by Rietveld method showed, that the Nd(2) polyhedron is distorted more, than the one in the Nd5Mo3O16 structure. Cerium (III)-containing polyoxotungstates Na9[Ce(W5O18)2]·31H2O, Ce2W7O24?20H2O, Ce5[HW7O24]3?56H2O, Ce10[W12O40(OH)2]3?94H2O, Na10Ce20 [W12O40(OH)2]7?180H2O, Na2Ce2[Ce2(H2O)10W22O72(OH)2]?35H2O synthesized for the first time and characterized by chemical analysis, XRD and infrared spectroscopy. The conditions for the synthesis of copper (II) paratungstate B Cu5[W12O40(OH)2]·35H2O from the equilibrium solution at Z=1.17 and from non-equilibrium solution at Z=1.29 were elaborated. The conditions for the formation of a double sodium-copper (II) paratungstates B Na2Cu3(CuOH)2[W12O40(OH)2]·32H2O and Na2Cu4[W12O40(OH)2]·22H2O as a result of self-assembly in solution of Cu(NO3)2-Na2WO4-HNO3-H2O were established. The results of X-ray single crystal studying of (CuOH)2[W12O40(OH)2]·32H2O and Na2Cu4[W12O40(OH)2]·22N2O monocrystals were deposited in the International Crystal Structural Database for inorganic compounds ICSD Fachinformationszentrum Karlsruhe, Germany as a CIF-files. A new structural type of copper (II) -containing paratungstate B with original cationic, anionic ordering and cavities in the structure with three types of coordination polyhedra of Cu atoms was found. Product Description popup.authors Іванцова Елла Сергіївна Арзамасцева Тетяна Олександрівна Баумер Вячеслав Миколайович Борисова Катерина Володимирівна Гетьман Євген Іванович Гумерова Надія Ісмагілівна Марійчак Олександра Юріївна Радіо Сергій Вікторович Розанцев Георгій Михайлович Сугаков Андрій Сергійович Усачов Олег Михайлович popup.nrat_date 2020-04-02 Close