Vibrational Analysis and Electrical Conduction Mechanism Investigations ofOrder Disorder Phase Transitions in [N(C3H7)4]2ZnBr4Compound

Abstract

Organic-inorganic hybrid materials have attracted growing attention in recent research because they can combine specific properties of organic-inorganic frameworks including the formation of interactions [1]. In fact, regarding the nature (molecular, ionic, hydrogen bonding, etc...) of organic and inorganic components, many combinations may be achieved to elaborate the interesting materials with special physical properties in several fields of new scientific materials, such as nonlinear optical, electronic, magnetic [2]. These materials have recently attracted further interest due to their attractive potential for application [3]. More particularly, the hybrids compounds of the general formula A2MX4, where A is the alkylammonium group, M a divalent metal and X a halogen, has received much attention due to the presence of several phase transitions related to the re-orientation of the cationic parts [4-10].Taking these aspects into account and as an extension of our previous studies on organic-inorganic hybrid materials, herein, we have successfully synthesized the bis-te trapropylammoniumtetrabromozincate compound. Structurally, at room temperature, [N(C3H7)4]2ZnBr4 crystals are monoclinic system (Space group C2/c) with the following unit cell parameters: a=33.145(5) Å, b=14.234(3) Å, c=15.081(2) Å, β=110.207(5)°. The atomic arrangement can be described by an alternation of organic and inorganic layers along the [100] direction, which are made up of [N(C3H7)4] and [ZnBr4]2 atom (Figure 1). The inorganic groups are located in the (100) plane at a=1/8 and 3/8 sandwiched between two different organic sheets [11]. In fact, the objective of this paper is to study the Raman scattering and electric propriety in order to investigate the phase transition for this compound. Crimson Publishers Wings to the Research Research Article