D. Cannon, C. Glidewell, J. N. Low
Feb 15, 2001
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Influential Citations
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Journal
Acta crystallographica. Section C, Crystal structure communications
Abstract
4-Methyl-2-nitroaniline, (I), C7H8N2O2, crystallizes with two molecules in the asymmetric unit. The molecules both form intramolecular N—H⋯O hydrogen bonds and they are linked into hydrogen-bonded C22(12) chains in which the two independent molecules alternate. 4,5-Dimethyl-2-nitroaniline, (II), C8H10N2O2, also has Z′ = 2 and the two independent molecules each form hydrogen-bonded C(6) chains. In 4-methyl-3-nitroaniline, (III), C7H8N2O2, there are four molecules in the asymmetric unit. Molecules of two of these types are linked by N—H⋯O hydrogen bonds into molecular ladders containing R43(18) rings and the other two types independently form single C(7) chains.