Polyoxometalate clusters as building blocks for oxide materials: Synthesis and structure of a three-dimensional copper-pyrazinetetrazolate/Keggin assembly

Kari Darling, Tiffany M. Smith, Jose Vargas, Charles J. O'Connor, Jon A Zubieta

Research output: Contribution to journalArticle

8 Scopus citations


The hydrothermal reaction of pyrazinetetrazole, copper(II) acetate monohydrate, molybdenum(VI) oxide and 1,2-ethylenediphosphonic acid yields the bimetallic oxide [{Cu4(pyztet)4(Hpyztet)(H 2O)2}{Mo12O36(PO4)}] ·2H2O (1·2H2O). The framework structure is constructed from {Mo12O36(PO4)}3 - clusters sandwiched between and linking {Cu4(pyztet) 5(Hpyztet)(H2O)2}n 3n + networks. The Cu(II)-pyrazinetetrazolate substructure contains both '4 + 2' axially distorted and square planar Cu(II) sites. The six-coordinate sites are of two types: the first exhibits {CuN6} coordination to four tetrazolate and two pyrazine nitrogen donors, while the second enjoys {CuN 4O2} coordination defined by three tetrazolates and one pyrazine nitrogen donor, an aqua ligand and an oxo-group bridging to the Keggin cluster.

Original languageEnglish (US)
Pages (from-to)1-4
Number of pages4
JournalInorganic Chemistry Communications
StatePublished - Jun 2013



  • Copper(II)-tetrazolate substructure
  • Copper-molybdenum oxide
  • Hydrothermal synthesis
  • Polyoxometalate building blocks

ASJC Scopus subject areas

  • Inorganic Chemistry
  • Physical and Theoretical Chemistry
  • Materials Chemistry

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