Organically Templated Linear and Layered Iron Sulfates
Linear and layered organically templated iron sulfates have been prepared under hydrothermal conditions. The linear iron sulfates, with the compositions [H3N(CH2)2NH3][FeF3(SO4)], I, [C(NH2)3]2[FeF(SO4)2], II, [H3N(CH2)2NH2(CH2)2NH3][FeF(SO4)2], III, and [H2N(CH2)4NH2][FeF3SO4], IV, possess the chain topologies found in tancoite, butlerite, and sideronatrite minerals. The layered sulfate V, with the composition [H3N(CH2)2NH3][Fe2F2(SO4)2(H2O)2], can be considered to be formed from butlerite-type chains and with a structure similar to that of the layered fluorophosphate, ULM-10. Whereas the linear chains show the presence of antiferromagnetic interactions, the layered iron sulfate exhibits metamagnetism.
A. Choudhury et al., "Organically Templated Linear and Layered Iron Sulfates," Chemistry of Materials, American Chemical Society (ACS), Jan 2003.
The definitive version is available at http://dx.doi.org/10.1021/cm020772p
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