Characterization of two new zinc(II) complexes with saccharinate and imidazole or benzimidazole as ligands |
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| Authors: | Patricia A.M. Williams Evelina G. Ferrer María J. Correa Enrique J. Baran Eduardo E. Castellano Oscar E. Piro |
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| Affiliation: | (1) Centro de Química Inorgánica (CEQUINOR/CONICET; UNLP), Facultad de Ciencias Exactas, Universidad Nacional de la Plata, C.Correo 962, 1900 La Plata, Argentina;(2) Instituto de Física de São Carlos, Universidade de São Paulo, 13560 São Carlos, SP, Brazil;(3) Departamento de Física and Instituto IFLP (CONICET), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 1900 La Plata, Argentina |
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| Abstract: | The crystal structure of the complexes [Zn(sac)2(im)2] (1) and [Zn(sac)2(bzim)2]2 2Et-OHH2O (2) (sac = saccharinate anion; im = imidazole; bzim = benzimidazole; EtOH = ethanol) was determined by single crystal X-ray diffractometry. Complex 1 crystallizes in the monoclinic P21/n space group with a = 9.1585(5), b = 16.4409(6), c = 15.0249(5) Å,  = 94.079(1)°, and Z = 4, whereas complex 2 belongs to the triclinic space group P1 with a = 10.8500(2), b = 12.4860(2), c = 13.5640(3) Å,  = 115,696(1), = 100.086(1),  = 102.169(1)°, and Z = 1. In both complexes, the Zn(II) cations are in a slightly distorted tetrahedral ZnN4 environment, coordinated to two saccharinate anions and to two imidazole (1) and to two benzimidazole (2) molecules. The complexes were also characterized by means of infrared spectroscopy and their thermal behavior investigated by means of thermogravimetric and differential thermal analytical techniques. |
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| Keywords: | Zinc(II) saccharinate imidazole benzimidazole IR-spectra thermal behavior |
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