A Hybrid Open-framework Structure: Synthesis and Structure of an Iron Phosphate Oxalate, [C₁₀N₄H₂₈][Fe₂(HPO₄)₃(C₂O₄)]₂
A new inorganic-organic hybrid structure has been synthesized hydrothermally in the iron phosphate oxalate family using 1,4-bis(3-aminopropyl)piperazine as the structure-directing agent. Crystal data for I, [C10N4H28][Fe2(HPO4)3(C2O4)]2: M = 589.8, monoclinic, space group = P21/n (no. 14), a = 10.829(1), b = 12.747(1), c = 12.397(1) Å, β = 95.1(1)°, V = 1704.4(3) Å3, Z = 4, R = 0.036 and Rw = 0.083 [1860 observed reflections with I > 2σ(I)]. The structure comprises a network of FeO6 octahedra and PO4 tetrahedra forming inorganic layers which are bridged by the oxalate units forming 8-membered channels in which the amine molecule resides. Magnetic susceptibility studies indicate an antiferromagnetic behavior with TN = ≈40 K, the highest known in an open-framework material.
A. Choudhury and S. R. Natarajan, "A Hybrid Open-framework Structure: Synthesis and Structure of an Iron Phosphate Oxalate, [C₁₀N₄H₂₈][Fe₂(HPO₄)₃(C₂O₄)]₂," Journal of Materials Chemistry, Royal Society of Chemistry, Jan 1999.
The definitive version is available at http://dx.doi.org/10.1039/A906663B
Article - Journal
© 1999 Royal Society of Chemistry, All rights reserved.