Synthesis of hybrid framework materials under "dry" hydrothermal conditions: Crystal structure and magnetic properties of Mn-2(H2PO4)(2)(C2O4)

Z A D Lethbridge, M J Smith, S K Tiwary, A Harrison, P Lightfoot

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30 Citations (Scopus)

Abstract

An exploration of the manganese oxalate-phosphoric acid-water system under hydrothermal conditions, and using "reagent" quantities only of water, has led to the isolation of a new mixed anion framework material Mn-2(H2PO4)(2)(C2O4). This material features continuous chains of cis edge-sharing MnO6 octahedra, a motif which is unique among mixed phosphate-oxalate materials identified so far. These octahedral chains are linked into a three-dimensional framework via corner-sharing with H2PO4 tetrahedra, with oxalate ions acting as a bis-bidentate ligand in the third direction. Magnetic susceptibility studies show that this material may be modeled as an antiferromagnetic, S = 5/2 Heisenberg chain, with weaker coupling between the chains.

Original languageEnglish
Pages (from-to)11-13
Number of pages3
JournalInorganic Chemistry
Volume43
DOIs
Publication statusPublished - 12 Jan 2004

Keywords

  • PHOSPHATE-OXALATE
  • IRON PHOSPHATE
  • PHOSPHATOOXALATE
  • SYSTEM
  • DESIGN

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