S 98 Synthesis, Physicochemical Properties, and Electrode Behavior of Ni2[Ni(OH)6W6O18] · 8H2O / E. V. Polyakov, T. A. Denisova, L. G. Maksimova, O. I. Gyrdasova, L. I. Manakova // Inorganic Materials. - 2002. - Vol. 38, № 9. - P. 956-961 : il. - Bibliogr. : p. 961 (14 ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): ГЕКСАВОЛЬФРАМОНИКЕЛАТ НИКЕЛЯ -- ЯДЕРНЫЙ МАГНИТНЫЙ РЕЗОНАНС -- ЯМР Аннотация: Nickel(II) hexatungstonickelate(II) was synthesized and characterized by elemental analysis, x-ray diffraction, thermal analysis, IR spectroscopy, and 1H nuclear magnetic resonance. The results demonstrate that constitutional water is present in the form of OH groups, which can be removed by heating to 230–370 °C. The chemical formula of the compound is Ni2[Ni(OH)6W6O18] ·8H2O. Nickel(II) hexatungstonickelate(II), a poorly soluble compound, was tested as an electrode for Ni(II) determination in solution. Its electrode properties and selectivity for other ions suggest that it is a promising material for such applications. At pH 5, the ionselective electrode we fabricated has a Nernstian response to Ni(II) (10–5 to 10–1 mol/l) which is close to that predicted theoretically Полный текст |