Structural, magnetic and vibrational characterization of the new organic-inorganic hybrid material, (C9H14N)2CoCl4

Publication date: Available online 9 April 2019Source: Journal of Molecular StructureAuthor(s): F. Issaoui, W. Amamou, M. Bekri, F. Zouari, E. Dhahri, M.A. ValenteAbstractA new organic–inorganic hybrid material, bis (N, N-dimethylbenzylammonium) tetrachlorocobaltate (II), (C9H14N)2 CoCl4 was synthesized and analyzed by X-ray diffraction. Magnetization was used to investigate the magnetic properties. The structure was determined at room temperature in the triclinic space group P-1 with the following parameters: a=10.491(5)Å, b =14.207(2)Å, c =16.187(3)Å, α= 87.76(3)°, β=88.436(8)°, γ= 89.897(10)° and Z= 2. The structure can be described by the alternation of organic-inorganic layers parallel to (110) plan. The different components are connected by the N-H…Cl hydrogen bonds between the cation and the anionic group [CoCl4]2-. Raman and infrared spectra were used to gain more information of the title compound. An assignment of the observed vibration modes is reported. This compound exhibits an antiferromagnetic (AFM) to paramagnetic (PM) phase transition at a temperature (TN) lower than 2 K. The values of paramagnetic Curie–Weiss temperature θCW, the nearest neighbor interaction Jnn, the classical nearest neighbor J cl and the dipolar Dnn interactions’ emphasize the existence of an antiferromagnetic interaction between the neighboring cobalt ions.
Source: Journal of Molecular Structure - Category: Molecular Biology Source Type: research