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The following articles are a selection of those recently accepted for publication in Acta Crystallographica Section E: Crystallographic Communications.
See also Forthcoming articles in all IUCr journals.
research communications (GO)Crystal structures of 2-methoxy-5-nitroaniline N-alkyl derivatives support color-center creation by a dipole-stacking mechanism
A striking color change from orange to yellow is observed in crystals of two N-alkyl derivatives of 2-methoxy-5-nitroaniline. The orange compound has a sterically unencumbered 4-methylbenzyl group and the yellow compound the more sterically demanding triphenylmethyl group. The crystal structures are used to rationalize a charge transfer color center in the former compound, which is less favorable in the latter.
