Structure and internal dynamics of N,N-diethylethylendiammonium pentachloroantimoniate(III)-N,N-diethylethylendiammonium dichloride

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• 作者：Mohsen Ouled Mohamed Sghaier ; Krystyna Holderna-Natkaniec ; Aneta Wozniak-Braszak ; Piotr Czarnecki ; Slaheddine Chaabouni
• 关键词：Molecular-ionic compounds
• 刊名：Polyhedron
• 出版年：9 March, 2014
• 年：2014
• 卷：70
• 期：Complete
• 页码：85-91
• 全文大小：1809 K

文摘

N,N-Diethylethylendiammonium pentachloroantimoniate(III)-N,N-diethylethylendiammonium dichloride (DEDA), chemical formula [(C₂H₅)₂NH(CH₂)₂NH₃][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) 脜 and Z = 4. The crystal structure consists of two N,N-diethylethylendiammonium cations, [SbCl₅]^{2鈭?/sup> anions and two isolated chloride ions. The anions, in which distorted [SbCl₅]2鈭?/sup> square pyramids share a common Cl鈭?/sup> ion, are held together in infinite chains parallel to the a axis. These chains are themselves interconnected by N-H鈰疌l hydrogen bridge bonds. The dynamics of the proton and the molecular motion revealed dynamical phase transitions in the vicinity of 208 and 255 K.}