Abstract
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 language | English (US) |
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Pages (from-to) | 186-191 |
Number of pages | 6 |
Journal | Journal of Solid State Chemistry |
Volume | 125 |
Issue number | 2 |
DOIs | |
State | Published - Sep 5 1996 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Ceramics and Composites
- Condensed Matter Physics
- Physical and Theoretical Chemistry
- Inorganic Chemistry
- Materials Chemistry