کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1404227 | 1501887 | 2008 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
1-(2â²-Aminophenyl)- and 1-(2â²-hydroxyphenyl)-2-methyl-4-nitroimidazole: Crystallizing with two molecules in the asymmetric unit
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Two similar 4-nitroimidazole derivatives, 1-(2â²-aminophenyl)-2-methyl-4-nitroimidazole, C10H9N3O3, and 1-(2â²-hydroxyphenyl)-2-methyl-4-nitroimidazole, C10H10N4O2, crystallize with two molecules in the asymmetric unit (Zâ²Â = 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 2â²-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.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Structure - Volume 876, Issues 1â3, 30 March 2008, Pages 134-139
Journal: Journal of Molecular Structure - Volume 876, Issues 1â3, 30 March 2008, Pages 134-139
نویسندگان
Maciej Kubicki, PaweÅ Wagner,