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Journal of Structural Chemistry

2015 year, number 5


A. D. Vasiliev1,2, N. N. Golovnev1
1Siberian Federal University, Krasnoyarsk, Russia
2Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russia
Keywords: кристаллическая структура, катион спарфлоксациниума, π-π-взаимодействие, тетрагалогенид-анионы цинка и кадмия, crystal structure, sparfloxacindi-ium cation, zinc and cadmium tetrahalide anions, hydrogen bonds, π-π interaction


The structure of two new ionic compounds of sparfloxacin (C 19H 22F 2N 4O 3, SfH), SfH 3[ZnCl 4]×1.5H 2O (I) and SfH 3[CdBr 4]×H 2O (II), is determined. Crystallographic data are as follows: for I a = 14.505(3) Å, b = 12.615(3) Å, c = 29.118(7) Å, V = 5254(4)Å 3, space group Pbca , Z = 8; for II a = 13.2822(5) Å, b = 10.2564(4) Å, c = 21.3250(8) Å, b = 100.7248(4)°, V = 2854.3(3) Å 3, space group P 2 1/ n , Z = 4. The structures of the compounds are stabilized by intra- and intermolecular hydrogen bonds and the structure of I is additionally stabilized by the p-p interaction between the SfH ions.