TY - JOUR
T1 - Hydrogen bonding in C-methylated nitroanilines: three triclinic examples with Z'=2 or 4
AU - Connon, D.
AU - Glidewell, C.
AU - Quesada, A.
AU - Wardell, J. L.
PY - 2001
Y1 - 2001
N2 - 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 C-2(2)(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 R-4(3)(18) rings and the other two types independently form single C(7) chains.
AB - 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 C-2(2)(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 R-4(3)(18) rings and the other two types independently form single C(7) chains.
KW - DIFFRACTION
KW - CRYSTALS
U2 - 10.1107/S0108270100017984
DO - 10.1107/S0108270100017984
M3 - Article
SN - 0108-2701
VL - C57
SP - 216
EP - 221
JO - Acta Crystallographica Section C, Crystal Structure Communications
JF - Acta Crystallographica Section C, Crystal Structure Communications
ER -