Optical,UV-Vis spectroscopy studies,electrical and dielectric properties of transition metal-based of the novel organic–inorganic hybrid(C_(6)H_(10)N_(2))(Hg_(2)Cl_(5))_(2)·3H_(2)O

作     者：Imen Ben Saad Najeh Hannachi Thierry Roisnel Faouzi Hlel 

作者机构：Laboratory of Spectroscopic Characterization and Optics of Materials Faculty of SciencesUniversity of Sfax B.P.11713000 SfaxTunisia University of RennesCNRSISCR(Institut des Sciences Chimiques de Rennes)–UMR 6226 F-35000 RennesFrance 

出 版 物：《Journal of Advanced Dielectrics》 (先进电介质学报（英文）)

年 卷 期：2019年第9卷第5期

页      面：72-86页

学科分类：0808[工学-电气工程] 081704[工学-应用化学] 0809[工学-电子科学与技术（可授工学、理学学位）] 07[理学] 0817[工学-化学工程与技术] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 070303[理学-有机化学] 0703[理学-化学] 0702[理学-物理学] 

主　　题：Optical properties UV-Vis spectroscopy the impedance spectroscopy the temperature(303-453 K)and frequency dependence of the electrical conductivity and the dielectric properties 

摘      要：In this work,we are interested in the synthesis of new hybrid material(C_(6)H_(10)N_(2))(Hg_(2)Cl_(5))_(2)·3H_(2)O grown by hydrothermal methods.X-ray diffraction indicates that this compound crystallizes at 150(2)K in the monoclinic system with C2/c space group,with the following unit cell parameters:a=19:6830(15)Å,b=18:1870(15)Å,c=6:8567(6)Å,β=93:224ð3Þ○and Z=*** the other hand,the optical properties of this compound were studied using ultraviolet-visible(UV-Vis)spectroscopy in the range 200-800 ***,the optical absorbances are used to determine the absorption coefficientαand the optical band gap E g,so the Tauc model was used to determine the optical gap energy of the compound(C_(6)H_(10)N_(2))(Hg_(2)Cl_(5))_(2)·3H_(2)*** analysis of the results revealed the existence of optical allowed indirect transition mechanisms with the band gap energy equal to(2.37 eV)for liquid and(4.33 eV)for *** measurements indicate that the electrical and dielectric properties are strongly dependent on both temperature and *** plots(Z versus Z )show that the conductivity behavior is accurately represented by an equivalent circuit model which consists of a series combination of bulk and grain ***,the angular frequency dependence plots of the real and imaginary parts,ε andε ,of complex dielectric permittivityε*and tanδlosses at several temperatures between 303 and 453 K were studied for the title ***,the modulus plots can be characterized by the presence of two relaxation peaks.