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Vibrational study,phase transitions and electrical properties of 4-benzylpyridinium monohydrogenselenate |
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| Institution: | 1. Department of Chemistry, Visva-Bharati University, Santiniketan 731235, India;2. G.S.S.S.T, Indian Institute of Technology, Kharagpur, India;1. College of Physics and Information Technology, Shaanxi Normal University, Xi’an 710062, China;2. College of Science, Xi’an Shiyou University, Xi’an 710065, China;3. Institute of Modern Physics, Northwest University, Xi’an 710069, China;1. Department of Physics, Gebze Technical University, 41400 Gebze, Kocaeli, Turkey;2. Institute of Physics of NAS of Azerbaijan, H. Javid av., 33, AZ-1143, Baku, Azerbaijan |
| Abstract: | The title compound C6H5CH2C5H4NH+·HSeO4− crystallizes in the orthorhombic system with the space group Pbca and the following unit cell dimensions: a=27.449(5) Å; b=10.821(6) Å and c=8.830(1) Å.The structure consists of infinite parallel two-dimensional planes built of HSeO4− anions and C6H5CH2C5H4NH+ cations mutually.Differential scanning calorimetry study on 4-benzylpyridinium monohydrogen-selenate was carried out. A high temperature second order phase transition at 363 K was found and characterized by electric measurements. The Raman of polycrystalline sample has been recorded at different temperature between 297 and 373 K.The conductivity relaxation parameters associated with some H+ conduction have been determined from an analysis of the M′′/M′′max spectrum measured in a wide temperature range. An appearance of the superionic phase transition in 4-BSe is closely related to a liberation or even a rotation increase of HSeO4− groups with heating. |
| Keywords: | A Organic-inorganic compound B Chemical synthesis C Impedance spectroscopy D Raman spectroscopy E Ionic conductivity |
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