TY - JOUR
T1 - A re-examination of supramolecular aggregation in two polymorphs of acetone 2,4-dinitrophenylhydrazone
AU - Wardell, James. L.
AU - Howie, R. Alan
AU - Low, John N.
AU - Glidewell, Christopher
PY - 2007/4
Y1 - 2007/4
N2 - The structure of the triclinic polymorph of acetone 2,4-dinitrophenylhydrazone, C9H10N4O4, has been redetermined from diffraction data collected at 120 (2) K; the molecules are linked by C - (HO)-O-... hydrogen bonds into centrosymmetric R-2(2)( 10) dimers which are themselves linked into a chain by an aromatic pi-pi stacking interaction. In the monoclinic polymorph, which crystallizes with Z' = 2 in the space group P2(1)/n, one type of molecule forms dimers exactly as in the triclinic polymorph, while the other forms C(6) chains.
AB - The structure of the triclinic polymorph of acetone 2,4-dinitrophenylhydrazone, C9H10N4O4, has been redetermined from diffraction data collected at 120 (2) K; the molecules are linked by C - (HO)-O-... hydrogen bonds into centrosymmetric R-2(2)( 10) dimers which are themselves linked into a chain by an aromatic pi-pi stacking interaction. In the monoclinic polymorph, which crystallizes with Z' = 2 in the space group P2(1)/n, one type of molecule forms dimers exactly as in the triclinic polymorph, while the other forms C(6) chains.
U2 - 10.1107/S0108270107006981
DO - 10.1107/S0108270107006981
M3 - Article
SN - 1600-5759
VL - 63
JO - Acta Crystallographica Section C-Crystal Structure Communications
JF - Acta Crystallographica Section C-Crystal Structure Communications
ER -