2016. 57, 4 – UDC 548.73:541.49:546.48 ORGANIC-INORGANIC HYBRID PEROVSKITE (C6H5(CH2)2NH3)2CdCl4: SYNTHESIS, STRUCTURAL AND THERMAL PROPERTIES S. Kassou1, A. Kaiba2, P. Guionneau3, A. Belaaraj1 1Laboratoire de Physique des Matйriaux et Modйlisation des Systиmes, CNRST-URAC08, Facultй des Sciences, Universitй Moulay Ismail, B.P. 11201, Zitoune, 50000 Meknиs, Maroc E-mail: a.belaaraj@fs-umi.ac.ma 3CNRS, Universitй Bordeaux, ICMCB, UPR 9048, F-33600 Pessac, France Received March, 3, 2015 . 776 – 781 2Physics Department, College of Sciences and Humanity, Prince Sattam bin Abdulaziz University, P.O. Box 83, Al-Kharj11942, Saudi Arabia Revised — April 16, 2015 The present research work reports the study on crystal structure, vibrational spectroscopy and thermal analysis of organic-inorganic hybrid compound (C6H5(CH2)2NH3)2CdCl4. <...> Single crystals of bis(phenethylammonium)tetrachlorocadmate (C6H5(CH2)2NH3)2CdCl4 (PEA—Cd) were obtained by diffusion at room temperature. <...> Single crystal structure has been solved and refined to R = 0.036 and wR = 0.092. <...> The structure consists of an extended [CdCl4]2– network and two [C6H5(CH2)2NH3]+ cations to form a two-dimensional perovskite system. <...> The infrared (IR) spectrum of the title compound was recorded at room temperature. <...> Differential scanning calorimetry (DSC) was used to investigate the phase transition; this compound exhibits a reversible single solid-solid phase transition. <...> DOI: 10.15372/JSC20160416 Keywords: layered perovskite, organic-inorganic hybrid, structural phase transition, single crystal, differential scanning calorimetry (DSC). <...> INTRODUCTION Bis(phenethylammonium) tetrachlorocadmate (PEA—Cd) belongs to a large family of organicinorganic hybrid perovskite-like systems with a general formula ((R—NH3)2MX4 (where R = Organic part, M = Transition metal and X = Halogen), which have been widely investigated in the last few years because of the enormous variety and their potential technological applications [ 1 ]. <...> The inorganic moieties consist of infinite sheets made up of corner-sharing octahedra MX6 (M = Mn, Cu, Mg, Cd, Fe). <...> The organic moieties comprise n-alkylammonium groups linked <...>