Synthesis and crystal structure of 1,2,3,4-tetrahydro-9-aminoacridine tetrachlorozincate(II) monohydrate

Author:

Miodragovic Djenana1,Jovanovic Dragoljub2,Bogdanovic Goran3ORCID,Mitic Dragana1ORCID,Andjelkovic Katarina1

Affiliation:

1. Faculty of Chemistry, Belgrade

2. Medicine Department of Nutrition and Botany, Faculty of Veterinary, Belgrade

3. Institute Vinča, Laboratory of Theoretical Physics and Condensed Matter Physics, Belgrade

Abstract

In the reaction of ZnCl2 with tacrine hydrochloride in water novel tetracoordinated (C13H15N2)2[ZnCl4].H2O complex was obtained and characterized by elemental analysis, molar conductivity and X-ray analysis. The complex crystallizes in the space group P-1 of the triclinic crystal system. The structure contains two crystallographically different molecules of protonated tacrine present as counter cations, the [ZnCl4]2- complex anion and one water solvent molecule. The counter cations slightly differ in the puckering of the cyclohexenyl ring. The molecules of protonated tacrine are involved in different intermolecular hydrogen bonds. In the crystal, the hydrogen bonding generates a 3D assembly. In the crystal, p...p stacking interactions between the rings of protonated tacrine were evidenced. The [ZnCl4]2-complex anion has a distorted tetrahedral geometry. Three out of the four Cl atoms are involved in intermolecular hydrogen bonding. The intermolecular H-bond interactions involving the Cl atoms affect the Zn-Cl bond lengths.

Publisher

National Library of Serbia

Subject

General Chemistry

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