Hydrothermal synthesis and structural characterization of organically-templated copper vanadium phosphates: The two-dimensional [{Cu 2(bisterpy)}V3O5 (HPO4) 2 (PO4)] (1) and the three-dimensional [{Cu 2(bisterpy)}V2O5 (HPO4)2](2) (bisterpy =2,2′:4′,4″:2″, 2‴-quarterpyridyl,6′,6″-dipyridine)

Bon Kweon Koo, Wayne Ouellette, Eric M. Burkholder, Vladimir Golub, Charles J. O'Connor, Jon Zubieta

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The hydrothermal reactions of appropriate vanadium oxides and copper(II) salts with bisterpy in the presence of phosphoric acid or fluorophosphoric acid yield the Cu(II)-bisterpy/oxovanadium phosphate materials [{Cu 2(bisterpy)}V3O5(HPO4) 2(PO4)] (1) and [{Cu2(bisterpy)}V 2O5(HPO4)2] (2). Compound 1 is layered material, consisting of inorganic {V3O5(HPO 4)2(PO4)}n4n- chains propagating parallel to the crystallographic a-axis, linked in the second dimension through binuclear {Cu2(bisterpy)}4+ units. The chain is constructed from corner-sharing {V4O10(PO 4)2}6- and {V2O2(PO 4)4}6- cluster building blocks. There are two distinct vanadium sites: a tetrahedral {V(V)O4} site and a square pyramidal {V(IV)O5} center. The Cu(II)-bisterpy subunits are linked to the vanadophosphate chains through phosphate oxygen atoms exclusively. In contrast, the structure of 2 is three-dimensional, exhibiting inorganic {Cu 2V2O5(HPO4)2} n networks linked through bisterpy bridges to provide the overall three-dimensional connectivity. The oxovanadium subunit consists of the well-documented {V2O7} binuclear unit of corner-sharing tetrahedral.

Original languageEnglish (US)
Pages (from-to)461-468
Number of pages8
JournalSolid State Sciences
Issue number5
StatePublished - May 1 2004


ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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