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

Research output: Contribution to journalArticle

25 Scopus citations

Abstract

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
Volume6
Issue number5
DOIs
StatePublished - May 1 2004

ASJC Scopus subject areas

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

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