Synthesis and structure of the two-dimensional bimetallic oxide [H 4tphz]3[{Zn(2)(tphz)(H(2)O) 4}{Mo5O15(O(3)PCH(2)CH 2PO3)}4]·14H(2)O: The hydrothermal conversion of tetra-2-pyridylpyrazine to tetrapyrido [2,3-a:3′,2′-c:2″,3″-h:3‴,2‴-j]phenazine (tphz)

Eric Burkholder, Jon Zubieta

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

The hydrothermal reaction of (NH4)6Mo 7O24·4H2O, ZnSO4·7H2O, tetra-2-pyridylpyrazine, ethylenediphosphonic acid, H2O and HF at 170°C for 96 h yields yellow crystals of [H 4tphz]3[{Zn2(tphz)(H2O) 4}{Mo5O15(O3PCH2CH 2PO3)}4]·14H2O (1·14H2O) (tphz = tetrapyrido[2,3-a:3′,2′-c: 2″,13″-h:3‴,2‴-j]phenazine (tphz)). The structure of 1 consists of two-dimensional networks constructed from chains of {Mo 5O15(O3PR)2}4- clusters tethered through the ethylene bridges of the diphosphonate ligands, which are in turn crosslinked through the {Zn2(tphz)(H2O) 4}4+ subunits. This connectivity generates intralamellar cavities which are occupied by the tetraprotonated H4tphz 4+ cations. A curious feature of the chemistry is the hydrothermal conversion of the tetra-2-pyridylpyrazine starting material to tphz.

Original languageEnglish (US)
Pages (from-to)1229-1235
Number of pages7
JournalInorganica Chimica Acta
Volume357
Issue number4
DOIs
StatePublished - Mar 10 2004

Keywords

  • Bimetallic oxide
  • Hydrothermal synthesis
  • Molybdophosphonate cluster
  • Network oxide

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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