Synthesis, crystal structure and electrical properties of the new organic-inorganic hybrid compound bis(1-chlorido-4-aminopyridinium) octachlorodiantimoinate

Bis(1-chlorido-4-aminopyridinium) octachlorodiantimoinate has been synthesized and characterized by a single-crystal X-ray diffraction at 296 K and impedance spectroscopy. At room temperature, the title compound is crystallized in the triclinic system (P 1 space group) with Z - 2 and the following unit cell dimensions: a = 7.919 (1) angstrom, b = 9.624 (1) angstrom, c = 17.692 (3) angstrom, a = 101.81 (1)degrees, beta = 95.12 (1)degrees and. = 112.48 (1)degrees. The crystal structure of the [C10H12Cl2N4] Sb2Cl8 compound is built of two un-equivalent monoprotonated cations [C5H6N2Cl](+) and two un-equivalent tetrachloroantimonate (III) anions noted which are [Sb(1)Cl-4]-and [Sb(2) Cl-4]-. The arrangement of this compound can be described by an alternation of organic and inorganic layers stacked along [010] direction. The cohesion of compound entities is ensured by hydrogen bonding (NH.. Cl) and Van Der Waals interaction (C-H.. Cl). The temperature dependence of the sdc conductivity exhibits an Arrhenius type behavior described by the following expression sdc T = Aexp(-Ea/k(beta)T). The Ac conductivity and the dielectric loss suggest that the correlated barrier hopping is the appropriate model for the conduction mechanism.