Abstract
A new iron phosphonate-oxalate [Fe(O 3PCH 3)(C 2O 4) 0.5(H 2O)] ( 1), has been synthesized under hydrothermal condition. The single-crystal X-ray diffraction studies reveal that 1 consists of layers of vertex-linked FeO 6 octahedra and O 3PC tetrahedra, which are further connected by bis-chelate oxalate bridges, giving to a 3D structure with 10-membered channels. Crystal data: monoclinic, P2 1/ n (no. 14), a = 4.851(2) Å, b = 16.803(7) Å, c = 7.941(4) Å, β = 107.516(6)°, V = 617.2(5) Å 3, Z = 4, R 1 = 0.0337 and w R 2 = 0.0874 for 1251 reflections [ I > 2 σ( I)]. Mössbauer spectroscopy measurement confirms the existence of high-spin Fe(III) in 1. Magnetic studies show that 1 exhibits weak ferromagnetism with T N = 30 K due to a weak spin canting.
Published Version
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