Preparation and characterization of organic-inorganic hybrid compound [N(C4H9)4]2Cu2Cl6

Organic-inorganic hybrid sample [N(C4H9)(4)](2)Cu2Cl6 was prepared via the reaction between copper chloride and tetrabutylammonium chloride. The compound was characterized by X-ray powder diffraction, IR, Raman, differential scanning calorimetry (DSC), DTA-TGA analysis and electrical impedance spectroscopy. DSC studies indicate a presence of one-phase transition at 343 K. The complex impedance of compound [N(C4H9)(4)](2)Cu2Cl6 have been investigated in temperature and frequency ranges 300-380 K and 200 Hz-5 MHz, respectively. The Z' and ZaEuro(3) versus frequency plots are well fitted to an equivalent circuit model. The circuits consist of the parallel combination of bulk resistance R (p) and constant phase elements CPE. The frequency dependence of the conductivity is interpreted in term of Jonscher's law:sigma(omega) = sigma(dc) + A omega(n). The conductivity follows the Arrhenius relation. The variation of the value of these elements with temperatures confirmed the availability of the phase transition at 343 K detected by DSC and electrical measurements.