An improved method for the synthesis of [ZnW12O40]6– and its reaction with [Pt(OH)4(H2O)2]: Crystal structures of (H2NMe2)5H[ZnW12O40] · 3.5H2O and K6Na2[PtW6O24] · 11H2O

A. V. Anyushin, P. A. Abramov, A. L. Gushchin, C. Vincent, M. N. Sokolov

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5 Citations (Scopus)

Abstract

(Me2NH2)5H[ZnW12O40] · 3.5H2O (I) has been synthesized by the reaction between Zn(NO3)2 · 4H2O, Na2WO4 · 2H2O and (Me2NH2)NO3 under hydrothermal conditions with a yield of 79%. The crystal structure of complex I has been characterized by single-crystal X-ray diffraction. Crystals of complex I are monoclinic, space group Cc, a = 13.165(1) Å, b = 19.370(1) Å, c = 20.987(2) Å, α = 84.81°, V = 5145.9(0) Å3, Z = 4, C10H48N5O43.5ZnW12. The Zn–O and W–O bond lengths are 1.86(2)–1.89(3) and 1.697(1)–2.030(2) Å, respectively. Na2K6[PtW6O24] · 11H2O (II) has been synthesized by a slow reaction between (Me2NH2)5H[ZnW12O40] · 3.5H2O and [Pt(OH)4(H2O)2] in H2O at room temperature. Crystals of complex II are trigonal, space group R3 ¯ m, a = 13.138(1) Å, c = 20.987(2) Å, V = 2742.9(1) Å3, Z = 3, H22O35Na2K6PtW6. The crystal structure of complex II contains [PtW6O24]6– anions linked to K+ cations via oxygen atoms. The Na+ cation is coordinated to water molecules. The Pt atom is in a standard octahedral surrounding (Pt–O and W–O are 2.018(6) and 1.762(5)–2.151(4) Å, respectively).

Original languageEnglish
Pages (from-to)397-403
Number of pages7
JournalRussian Journal of Inorganic Chemistry
Volume62
Issue number4
DOIs
Publication statusPublished - 1 Apr 2017

Keywords

  • CRYOSPRAY MASS-SPECTROMETRY
  • PHOTOCATALYTIC PROPERTIES
  • HYDROTHERMAL SYNTHESIS
  • ALPHA-KEGGIN
  • ANION
  • HETEROPOLYTUNGSTATES
  • POLYOXONIOBATES
  • COMPLEXITIES

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