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1-(2���-Aminophenyl)- and 1-(2���-hydroxyphenyl)-2-methyl-4-nitroimidazole: Crystallizing with two molecules in the asymmetric unit

Journal Article


Abstract


  • Two similar 4-nitroimidazole derivatives, 1-(2���-aminophenyl)-2-methyl-4-nitroimidazole, C10H9N3O3, and 1-(2���-hydroxyphenyl)-2-methyl-4-nitroimidazole, C10H10N4O2, crystallize with two molecules in the asymmetric unit (Z��� = 2). Packing conflicts may result from tendency towards closing hydrogen-bonded rings (dimer for amino-, and tetramer for hydroxy-derivative) and molecular stacking. These conflicts are solved in different ways in both compounds, due to the different nature of 2���-substituents, but in both cases the crystal structure involves multiple molecules in the asymmetry unit. The geometrical features of symmetry-independent molecules are similar. The nitro group is almost coplanar with the imidazole plane in amino derivative while it is significantly twisted in hydroxy-one. �� 2007 Elsevier B.V. All rights reserved.

Publication Date


  • 2008

Citation


  • Kubicki, M., & Wagner, P. (2008). 1-(2���-Aminophenyl)- and 1-(2���-hydroxyphenyl)-2-methyl-4-nitroimidazole: Crystallizing with two molecules in the asymmetric unit. Journal of Molecular Structure, 876(1-3), 134-139. doi:10.1016/j.molstruc.2007.06.013

Scopus Eid


  • 2-s2.0-40649086056

Start Page


  • 134

End Page


  • 139

Volume


  • 876

Issue


  • 1-3

Place Of Publication


Abstract


  • Two similar 4-nitroimidazole derivatives, 1-(2���-aminophenyl)-2-methyl-4-nitroimidazole, C10H9N3O3, and 1-(2���-hydroxyphenyl)-2-methyl-4-nitroimidazole, C10H10N4O2, crystallize with two molecules in the asymmetric unit (Z��� = 2). Packing conflicts may result from tendency towards closing hydrogen-bonded rings (dimer for amino-, and tetramer for hydroxy-derivative) and molecular stacking. These conflicts are solved in different ways in both compounds, due to the different nature of 2���-substituents, but in both cases the crystal structure involves multiple molecules in the asymmetry unit. The geometrical features of symmetry-independent molecules are similar. The nitro group is almost coplanar with the imidazole plane in amino derivative while it is significantly twisted in hydroxy-one. �� 2007 Elsevier B.V. All rights reserved.

Publication Date


  • 2008

Citation


  • Kubicki, M., & Wagner, P. (2008). 1-(2���-Aminophenyl)- and 1-(2���-hydroxyphenyl)-2-methyl-4-nitroimidazole: Crystallizing with two molecules in the asymmetric unit. Journal of Molecular Structure, 876(1-3), 134-139. doi:10.1016/j.molstruc.2007.06.013

Scopus Eid


  • 2-s2.0-40649086056

Start Page


  • 134

End Page


  • 139

Volume


  • 876

Issue


  • 1-3

Place Of Publication