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 PO groups which protrude into the interlamellar space. The infinite edge-sharing chains display a pairwise puckering resulting from the presence oftransμ2-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 groupP21/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 Mössbauer data, dc magnetization, and ac susceptibility measurements show that 1 undergoes a transition to a weak ferromagnetic state near 30 K.
No takes yet. Share an insight, caveat, or question.
DeBord et al. (1996) studied this question.