Alternative current conduction mechanisms of organic-inorganic compound [N(CH₃)₃H]₂ZnCl₄

[N(CH₃)₃H]₂ZnCl₄ has been studied by X-ray powder diffraction patterns, differential scanning calorimetry (DSC), and impedance spectroscopy. The [N(CH₃)₃H]₂ZnCl₄ hybrid compound is crystallized at room temperature (T $≈$ 300 K) in the orthorhombic system with Pnma space group. Five phase transitions (T₁ = 255 K, T₂ = 282 K, T₃ = 302 K, T₄ = 320 K, and T₅ = 346 K) have been proved by DSC measurements. The electrical technique was measured in the 10⁻¹-10⁷ Hz frequency range and 233–363 K temperature interval. The frequency dependence of alternative current (AC) conductivity is interpreted in terms of Jonscher's law. The AC electrical conduction in [N(CH₃)₃H]₂ZnCl₄ is analyzed by different processes, which can be attributed to several models: the correlated barrier hopping model in phase I, the overlapping large polaron tunneling model in phase II, the quantum mechanical tunneling model in phase IV, and the non-overlapping small polaron tunneling model in phases III, V, and VI. The conduction mechanism is studied with the help of Elliot's theory, and the Elliot's parameters are determined.