Synthesis, crystal structure and dielectric properties of the new organic -inorganic hybrid compound [C6H10N2]7[Bi2Cl11]2.4[Cl]

A new organic-inorganic hybrid compound, [C6H10N2](7)[Bi2Cl11](2).4 [Cl], was synthesized, the crystal was grown by slow evaporation solution technique at room temperature and its structure determined by means of single crystal X-ray diffraction studies. The molecule crystallizes in the tetragonal P4/n space group with cell parameters a = b = 12.9758 (14) angstrom, c = 14.2611 (17) angstrom, V = 2401.2 (5) angstrom(3) and Z = 1. Crystal structure was solved with a final R = 0.033 for 2185 independent reflections. The structure consists of alternate organic and inorganic layers stacked in the a-direction. The anionic layers are made up of discrete [Bi2Cl11](5-) tetrahedrons, while the cationic layers are formed by [C6H10N2](2+) cations. Hirschfeld surface analyses of the studied salt have also been carried out. Furthermore, the complex impedance of the compound has been investigated in the temperature range of 293-423 K and in the frequency range of 209 Hz-5 MHz. The frequency-dependent AC conductivity is well described by Jonscher's universal power law. The nature of DC conductivity variation suggests Arrhenius type of electrical conductivity. Besides, analysis is of the dielectric constants epsilon', epsilon '' versus temperature, at several frequencies, shows a distribution of relaxation times. Which is probably related to the change in the dynamical state of the [C6H10N2](2+) cations and the [Bi2Cl11](5-) anions. (C) 2017 Elsevier B.V. All rights reserved.