Synthèse et caractérisation d’un nouveau hybride dimalonato tétraaqua cobalt (II) [Co(C4H3O4)2(H2O)4]
Written by sctunisie no commentsThe title compound was synthesized by slow evaporation of solution at room temperature, it has been characterized by X–ray diffraction, IR spectral analysis and UV–vis spectroscopy. The natural elements are detected by the EDX on a scanning electron microscope. The thermal analysis shows that the dehydration of the compound occurs in agreement with the structural features. The temperature dependence of the molar magnetic susceptibility, χM, was measured on a polycristalline sample in the temperature range 5-300 K using a SQUID magnetometer. The structure was determined by X-ray diffraction on single crystal. This salt crystallizes in the triclinic space group P-1 with a = 5.241(1) Å, b = 7.362(1) Å, c = 9.268(1) Å, α = 109.15(2)°, β = 104.39(3)°, γ = 93.15(1)°, V = 323.6(3) Å3 and Z = 2. The crystal structure was determined and refined to R = 0.021 and wR = 0.057 using 1881 independent reflections. The cohesion of structure is only assured by strong intermolecular hydrogen bond O – H …O so forming a three dimensional network.
J. Abdelhak, S. Namouchi Cherni, M.F. Zid, A. Driss
hybrid complex, malonate, cobalt, structure
Pages 79-87
