The synthesis, magnetic properties and crystal structure of a Cu(II) methylenediphosphonate, [Cu2(O3PCH2PO3)]

Eric Burkholder, Vladimir O. Golub, Charles J. O'Connor, Jon Zubieta

Research output: Contribution to journalArticle

17 Scopus citations

Abstract

The hydrothermal reaction of Cu(SO4)·5H2O, methylenediphosphonate and water in the mole ratio 1.0:1.5:4100 at 150°C for 48 h yielded clear colorless crystals of [Cu2(O3PCH2PO3)] (1). The structure of 1 is a three-dimensional framework constructed from chains of edge-sharing {CuO5} trigonal bipyramids linked through the {O3PCH2PO3}4- subunits. The magnetic data from 35 to 300 K were fit to the Heisenberg linear antiferromagnetic chain model, giving g = 1.98 and J/kB = -35.9 K. At lower temperatures, a Néel transition suggests three-dimensional long-range ordering. Crystal data: CH2Cu2O6P2, orthorhombic, Pnma, a = 13.698(1), b = 8.0094(6), c = 4.8950(4) Å, V = 537.04(7) Å3, Z = 4, Dcalc = 3.699 g cm-3.

Original languageEnglish (US)
Pages (from-to)127-132
Number of pages6
JournalInorganica Chimica Acta
Volume340
DOIs
StatePublished - Nov 25 2002

Keywords

  • Cu(II)-diphosphonatoalkane
  • Framework structures
  • Magnetic properties

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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