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Magneto-structural studies of the bis (1,4-bis (3-aminopropylamine) piperazinium) chloride pentachlorocuprate (II) trihydrate
Faculty
Science
Year:
2010
Type of Publication:
Article
Pages:
2005-2010
Authors:
Issaoui, F, Dhahri, E, Baccar, I, Zouari, F, Hussein, M, Valente, M. A
DOI:
10.1016/j.ssc.2010.08.018
Journal:
SOLID STATE COMMUNICATIONS PERGAMON-ELSEVIER SCIENCE LTD
Volume:
150
Research Area:
Physics
ISSN
ISI:000283613600012
Keywords :
Crystal structure, Magnetic properties, Differential scanning calorimetric, Raman spectroscopy
Abstract:
Bis(1,4-bis (3-aminopropylamine) piperazinium) chloride pentachlorocuprate (II) trihydrate (C(10)H(26)N(4))(2) Cl CuCl(5)center dot 3H(2)O has been prepared and characterized by various physicochemical techniques including Raman spectroscopy and magnetic properties. A preliminary single crystal X-ray diffraction structural analysis reveals that the title compound belongs to the orthorhombic system with space group Pnma. The unit cell dimensions are: a = 8.216(9), b = 13.006(8), c = 21.376(20) angstrom, with Z = 4. Its crystal structure was determined and refined down to R = 0.028. The structure of this compound consists of diprotonated (1,4 bis (3-aminopropyl) piperazinium) cations, polynuclear anions and water molecules. These entities are interconnected by means of hydrogen bonding contacts {[}N-H center dot center dot center dot O(Cl), O(W)-H center dot center dot center dot Cl and O(W)-H center dot center dot center dot O] forming a three-dimensional network. Differential scanning calorimetry study was carried out. The Raman of polycristalline samples, have been recorded at different temperatures between 263 and 300 K. A low temperature phase transition at 283 K of order-disorder type was found. The temperature dependence of the magnetic susceptibility was measured in the temperature range of 2-120 K at different magnetic field intensities. The experimental effective magnetic moment coincides with theoretical one. The results indicate that the complex exhibit weak antiferromagnetic coupling between the copper (II) centers. The ferromagnetic ordering is further confirmed by the presence of hysteresis loops with rapid saturation in the (C(10)H(26)N(4))(2)ClCuCl(5)center dot 3H(2)O compounds. (c) 2010 Elsevier Ltd. All rights reserved.
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