A mixed metal phosphate incorporating isonicotinate ligand: Synthesis, crystal structure, and magnetic properties of Cu(HINT)(VO2)(PO 4)

Chih Min Wang, Ya Lan Chuang, Shiuan Ting Chuang, Kwang Hwa Lii

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19 Scopus citations

Abstract

A mixed metal phosphate incorporating isonicotinate ligand, Cu(HINT)(VO2)(PO4), was hydrothermally synthesized and characterized by single-crystal X-ray diffraction and magnetic susceptibility. This compound crystallizes in the monoclinic space group C2/c with cell parameters a=22.033(1)Å, b=6.2986(3)Å, c=16.0202(9)Å, β=121.001(1), and Z=8. The structure consists of two-dimensional neutral sheets of CuVO2(PO4) with the dipolar isonicotinate ligand being coordinated to Cu ions as a pendent group. Adjacent sheets are connected by hydrogen bonding. Each sheet consists of infinite chains of CuO6 octahedra sharing trans edges which are connected by double chains of vanadyl(V) phosphate via corner sharing. Magnetic study results indicate the presence of intrachain ferromagnetic coupling between Cu ions. The magnetic exchange parameter was estimated as 2J/k =51.83K based on an S=1/2 equally spaced ferromagnetic chain model.

Original languageEnglish
Pages (from-to)2305-2310
Number of pages6
JournalJournal of Solid State Chemistry
Volume177
Issue number7
DOIs
StatePublished - Jul 2004

Keywords

  • Copper
  • Isonicotinate
  • Phosphate
  • Vanadium

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