Crystal structures of six 4-(4-nitro­phenyl)­piperazin-1-ium salts

Mahesha, N. and Kiran Kumar, H. and Yathirajan, H. S. and Foro, Sabine and Abdelbaky, Mohammed S. M. and Garcia-Granda, Santiago (2022) Crystal structures of six 4-(4-nitro­phenyl)­piperazin-1-ium salts. Acta Crystallographica Section E, 78 (5). ISSN 2056-9890

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Abstract

Six piperazinium salts, namely 4-(4-nitro­phenyl)­piperazin-1-ium 4-bromo­ben­zo­ate dihydrate, C10H14N3O2+·C7H4BrO2−·2H2O, (I), 4-(4-nitro­phenyl)­pi­per­a­zin-1-ium 4-iodo­benzoate dihydrate, C10H14N3O2+·C7H4IO2−·2H2O, (II), 4-(4-nitro­phenyl)­piperazin-1-ium 4-hy­droxy­benzoate monohydrate, C10H14N3O2+·C7H5O3−·H2O, (III), 4-(4-nitro­phenyl)­piperazin-1-ium 4-methyl­benzoate monohydrate, C10H14N3O2+·C8H7O2−·H2O, (IV), 4-(4-nitro­phenyl)­piperazin-1-ium 4-meth­oxy­benzoate hemihydrate, 2C10H14N3O2+·2C8H7O3−·H2O, (V), and 4-(4-nitro­phenyl)­piperazin-1-ium 4-eth­oxy­benzoate, 2C10H14N3O2+·2C9H9O3−, (VI), have been synthesized and their crystal structures solved by single-crystal X-ray diffraction, revealing that all of them crystallize in the triclinic space group P[\overline{1}] except for (V), which crystallizes in the monoclinic space group P21/c and has a disordered nitro group. Compounds (I) and (II) are isostructural. The crystal packing of (I)–(V) is constructed from organic chains formed by a combination of hydrogen bonds of type N—H⋯O and/or O—H⋯O and other weak inter­actions of type C—H⋯O and/or C—H⋯π, forming sheets, whereas (VI) shows a cationic and anionic-based layer structure.

Item Type:	Article
Uncontrolled Keywords:	crystal structure, piperazine, benzoate anion, biological activity
Subjects:	C Chemical Science > Chemistry
Divisions:	Department of > Chemistry
Depositing User:	C Swapna Library Assistant
Date Deposited:	27 Apr 2022 05:32
Last Modified:	27 Apr 2022 05:32
URI:	http://eprints.uni-mysore.ac.in/id/eprint/17331

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