Abstract
A new organic-inorganic (C7H10NO)(2)[SnCI6]2H(2)O compound was synthesized and characterized by X-ray diffraction, thermal analysis, NMR spectroscopy and dielectric measurements. The crystal structure refinement shows that this compound crystallizes at 298 K in the monoclinic system (P2(1)/a space group (Z = 2)). The structure was solved by Patterson method and refined to a final value of R = 0.034 for 2207 independent observed reflections. The cohesion and stability of the atomic arrangement result from the establishment of N -H...C1, O(W)-H(W)...CI and N-H...O(W) hydrogen bonds between (C7H10NO)+ cations, isolated (SnCI6)(2-) anions and water molecules. This compound exhibits a phase transition at 305 IC which was characterized by differential scanning calorimetry (DSC), X-rays powder diffraction and dielectric measurements. At high frequency, the electrical sigma Tot.(w,T) conductivity obey to the Jonscher's power law sigma.(Tot).(omega,T) = sigma-Dc(T) + B(T) omega(S(T)). DC and AC conductivity in (C7H10NO)(2)[SnCI6]2H(2)O was investigated revealing that the phase transition from the monoclinic P2(1)/a (phase I) to the monoclinic C2/ c (phase II) which occurs at 305 K is characterized by a change of the mechanism of the electric transport: SPT in phase I and CBH in phase II. (C) 2016 Elsevier B.V. All rights reserved.