Distortions from regular geometry in substituted paranitroanilines : crystal and molecular structures of (I) N,N-dimethyl-2,4,6-trinitroaniline, (II) N-methyl-2,4,6-trinitroaniline, (III) 3-trifluoromethyl-2,4,6-trinitroaniline, (IV) 3,5-dihydroxy-2,4,6-trinoaniline, (V) 3-methoxy-2,4,6-trinitroaniline, (VI) N-ethyl-2,4,6-trinitroaniline .0.5 octane, and (VII) 3-bromo-2,4,6-trinitroanilineBUTCHER, R. J; GILARDI, R; FLIPPEN-ANDERSON, J. L et al.New journal of chemistry (1987). 1992, Vol 16, Num 6, pp 679-692, issn 1144-0546Article