Structure and internal dynamics of N,N-diethylethylendiammonium pentachloroantimoniate(III)-N,N-diethylethylendiammonium dichloride
Ouled Mohamed Sghaier M.1, Hołderna-Natkaniec K.2, Woźniak-Braszak A.2, Czarnecki P.2, Chaabouni S.1
- 1Laboratory of Materials Science and Environment, Faculty of Sfax, BP 1171, 3000 Sfax, Tunisia
- 2Faculty of Physics, Adam Mickiewicz University, Umultowska 85, 61-614 Poznan, Poland
Polyhedron, 70, pp.85-91, 2014
DOI:: 10.1016/j.poly.2013.12.011
Abstract:
N,N-Diethylethylendiammonium pentachloroantimoniate(III)-N,N- diethylethylendiammonium dichloride (DEDA), chemical formula [(C 2H5)2NH(CH2)2NH 3][SbCl5][(C2H5) 2NH(CH2)2NH3]Cl2, has been synthesized and characterized by the X-ray diffraction method at 293 K. It crystallizes in the orthorhombic space group Pnam with the following unit-cell dimensions: a = 9.9700(0), b = 10.8400(1), c = 23.6360(6) Å and Z = 4. The crystal structure consists of two N,N-diethylethylendiammonium cations, [SbCl5]2- anions and two isolated chloride ions. The anions, in which distorted [SbCl5]2- square pyramids share a common Cl- ion, are held together in infinite chains parallel to the a axis. These chains are themselves interconnected by N-Hâ̄Cl hydrogen bridge bonds. The dynamics of the proton and the molecular motion revealed dynamical phase transitions in the vicinity of 208 and 255 K. © 2013 Elsevier Ltd. All rights reserved.
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