Packing modes in nitrobenzene derivatives. II. The 'pseudo-Herringbone' mode

摘要

Nitrobenzene derivatives pack in two main motifs: stacks [see Andre, Foces-Foces, Cane & Martinez-Ripoll (1997). Acta Cryst. B53, 984-995] and 'pseudo-herringbone' together account for some 61.5% of the structures classified as BCLASS = 15 by the Cambridge Structural Database. Several geometrical parameters allow the classification of the 'pseudo-herringbone' category into four main motifs. Weak interactions appear to play an important role in this packing mode.