Hydrothermal synthesis and structure of [Ni(tpyrpyz)2] 2[Mo4O12F2][Mo6O 19]·2H2O, a material exhibiting an unusual tetranuclear polyoxofluoromolybdate cluster [Mo4O12F 2]2-

Eric Burkholder, Jon Zubieta

Research output: Contribution to journalArticle

37 Scopus citations

Abstract

The hydrothermal reaction of a solution of Ni(CH3CO 2)2·4H2O, MoO3, tetra-4-pyridylpyrazine, H2O3PCH3, and HF at 200 °C for 96 h yields orange crystals of [Ni(tpyrpyz)2] 2[Mo4O12F2][Mo6O 17]·2H2O (1·2H2O). The structure consists of discrete {Ni(tpyrpyz)2}2+ cations and {Mo 6O19}2- and {Mo4O12F 2}2- anionic clusters. The hexamolybdate is the well-documented octahedron of octahedra, that is, six {MoO6} octahedra in a compact edge-sharing arrangement. The novel oxyfluoride cluster {Mo4O12F2}2- features two {MoO 4F2} octahedra, sharing the edge defined by the fluoride ligands; the octahedral Mo sites corner-share to two {MoO4} tetrahedra in the μ2-O, O bridging mode.

Original languageEnglish (US)
Pages (from-to)279-284
Number of pages6
JournalInorganica Chimica Acta
Volume357
Issue number1
DOIs
StatePublished - Jan 9 2004

Keywords

  • Hydrothermal synthesis
  • Molybdenum oxides
  • Oxyfluoromolybdates
  • Polyoxoanions

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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