The first organically templated layered iron phosphate: Hydrothermal synthesis, structure, magnetic properties, and the Mössbauer spectrum of [H3NCH2CH2NH3] 0.5[Fe(OH)(PO4)]

Jeffrey R D DeBord, William M. Reiff, Robert C. Haushalter, Jon A Zubieta

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The first organically templated, layered iron phosphate [H3NCH2CH2NH3] 0.5[Fe(OH)(PO4)], 1, has been prepared and characterized via single crystal X-ray diffraction, variable temperature magnetic susceptibility measurements, and Mössbauer spectroscopy. Phosphate 1 is synthesized from the hydrothermal reaction of FeCl3, H3PO4, ethylenediamine, and H2O in the mole ratio 1:3.6:4.2:444 for 64 h at 160°C and exhibits a layered structure consisting of infinite chains of edge-sharing {FeO6} octahedra linked into finite 2-D sheets by {PO4} tetrahedra that possess terminal P=O groups which protrude into the interlamellar space. The infinite edge-sharing chains display a pairwise puckering resulting from the presence of trans μ2-OH groups arranged in a zig-zag fashion along the chain. The charge compensating ethylenediammonium cations contact both adjacent layers via an elaborate and complicated hydrogen bonded network. Crystal data for 1: FePO5NCH6, monoclinic, space group P21/c, a = 4.5010(7) Å, b = 6.114(1) Å, c = 18.460(3) Å, β = 94.59(1)°, V = 56.4(1) Å, Z = 2, dcalc = 2.608 g · cm-3; 1650 reflections, R = 0.049. Variable temperature Mossbauer data, dc magnetization, and ac susceptibility measurements show that 1 undergoes a transition to a weak ferromagnetic State near 30 K.

Original languageEnglish (US)
Pages (from-to)186-191
Number of pages6
JournalJournal of Solid State Chemistry
Issue number2
StatePublished - Sep 5 1996


ASJC Scopus subject areas

  • Inorganic Chemistry
  • Physical and Theoretical Chemistry
  • Materials Chemistry

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