Synthesis, crystal structure, dielectric properties, and AC conductivity of tri-tetrapropylammonium dodeca chlorobismuthate(III).

The new organic-inorganic compound, tri-tetrapropylammonium dodeca chlorobismuthate(III), has been synthesized and characterized by single-crystal X-ray diffraction at room temperature. It is crystallized in the triclinic system ( $$ \mathrm{P}\overline{1} $$ space group). The atomic arrangement can be described by an alternation of two types of organic-inorganic layers stacked in [010] direction. The nature of the inorganic polyhedra distortion which can be attributed to the stereo activity of the Bi(III) lone electron pair has been studied. Regarding the differential scanning calorimetry, it disclosed one structural phase transition at T = 423 (±5) K of the order-disorder type. Furthermore, the dielectric properties of the compound were studied using complex impedance spectroscopy in the frequency range 209 Hz-5 MHz and temperature range 368-458 K. 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. [ABSTRACT FROM AUTHOR]