Synthesis, crystal structure, thermal analysis and dielectric properties of (C8H12N)3SnCl6.Cl compound

• Crystal structure of a new hybrid organic compound (C8H12N)Sn Cl6Cl.
• Thermal properties of the compound show a dynamic order-disorder phase transition at 330 K.
• Conductivity and modulus data confirm that the transport is through the ion hopping mechanism.

A new compound of formula (C8H12N)3SnCl6·Cl is obtained at room temperature by slow evaporation of aqueous solution. Structural analysis indicates that this compound crystallizes in the monoclinic system with P21/C space group. The N–ZH⋯Cl hydrogen bonds between (C8H12N)+ cations, Cl− anions and [SnCl6]2− dianions contribute to the cohesion and the stability of the atomic arrangement. One phase transition is detected by differential thermal analysis at 330 K. Dielectric studies of this compound were studied in the frequency from 100 Hz to 1 MHz and a temperature ranging between 290 K and 380 K. The analysis of Nyquist plots are well fitted to an equivalent circuit consisting of series of combination of grains and grain boundary elements. The AC conductivity was studied using the following equation:σAC(ω)=σs1+τ2ω2+σ∞τ2ω21+τ2ω2+BωS. The temperature dependence of the power law exponent s and a.c conductivity σac is reasonably interpreted by Correlated Barrier Hopping and Small Polaron Tunneling models.