TY - JOUR
T1 - (E)-(1-Oxoindan-2-yl-idene)acetic acid
T2 - Catemeric hydrogen bonding in an unsaturated -keto acid
AU - Dufort, Marisa D.
AU - Lalancette, Roger A.
AU - Thompson, Hugh W.
PY - 2007
Y1 - 2007
N2 - The title compound, C11H8O3, displays catemeric aggregation, involving hydrogen bonds progressing from the carboxyl of one mol-ecule to the ketone of a glide-related neighbor [O⋯O = 2.6952 (12) Å and O - H⋯O = 177.7 (16)°]. The mol-ecule is highly planar and inherently achiral, but a slight conformational enanti-omerism generated by the packing creates alternating conformational chirality in the chain units. Hydrogen-bonding chains, all aligned in the a-axis direction, occur in parallel counter-directional pairs related by centrosymmetry. Significant overlap of the aromatic rings occurs in the mol-ecular stacking, at an average distance of 3.354 Å. Two C - H⋯O=C close contacts exist.
AB - The title compound, C11H8O3, displays catemeric aggregation, involving hydrogen bonds progressing from the carboxyl of one mol-ecule to the ketone of a glide-related neighbor [O⋯O = 2.6952 (12) Å and O - H⋯O = 177.7 (16)°]. The mol-ecule is highly planar and inherently achiral, but a slight conformational enanti-omerism generated by the packing creates alternating conformational chirality in the chain units. Hydrogen-bonding chains, all aligned in the a-axis direction, occur in parallel counter-directional pairs related by centrosymmetry. Significant overlap of the aromatic rings occurs in the mol-ecular stacking, at an average distance of 3.354 Å. Two C - H⋯O=C close contacts exist.
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U2 - 10.1107/S1600536807013700
DO - 10.1107/S1600536807013700
M3 - Article
AN - SCOPUS:35148874617
SN - 1600-5368
VL - 63
SP - o2084-o2086
JO - Acta Crystallographica Section E: Structure Reports Online
JF - Acta Crystallographica Section E: Structure Reports Online
IS - 5
ER -