Synthesis and characterization of nickel phosphonopropionate hybrid materials |
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| Affiliation: | 1. Department of Chemistry, Ferdowsi University of Mashhad, Mashhad 91775-1436, Islamic Republic of Iran;2. Departament de Química, Universitat de les Illes Balears, Crta. de Valldemossa km 7.5, 07122 Palma de Mallorca (Baleares), Spain;3. Department of Chemistry, Tulane University, New Orleans, LA 70118, USA |
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| Abstract: | Hydrothermal reaction of nickel acetate with 3-phosphonopropionic acid and 4,4′-bipyridine resulted in two novel phosphonate compounds Ni(HO3PC2H4COO)(4,4′-bpy)(H2O) · 0.5(4,4′-bpy) (bpy = bipyridine) (I) and Ni(O3PC2H4COOH)(4,4′-bpy)(H2O)3 · H2O (II). Single-crystal X-ray studies reveal that self-assemblies between the ligands and metal ion result in layer (I) and chain (II) structures. Magnetic measurement of I indicate there are ferromagnetic couplings between adjacent Ni2+ ions (C = 1.29 cm3 mol?1 K and θ = 2.25 K). |
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