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organic compounds
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The title compound, C8H9ClO, packs with two independent molecules in the asymmetric unit, without significant differences in corresponding bond lengths and angles, with the ethyl group in each oriented nearly perpendicular to the aromatic ring having ring-to-side chain torsion angles of 81.14 (18) and −81.06 (19)°. In the crystal, molecules form an O—H
O hydrogen-bonded chain extending along the b-axis direction, through the phenol groups in which the H atoms are disordered. These chains pack together in the solid state, giving a sheet lying parallel to (001), via an offset face-to-face π-stacking interaction characterized by a centroid–centroid distance of 3.580 (1) Å, together with a short intermolecular ClCl contact [3.412 (1) Å].
O hydrogen-bonded chain extending along the b-axis direction, through the phenol groups in which the H atoms are disordered. These chains pack together in the solid state, giving a sheet lying parallel to (001), via an offset face-to-face π-stacking interaction characterized by a centroid–centroid distance of 3.580 (1) Å, together with a short intermolecular ClCl contact [3.412 (1) Å].Keywords: crystal structure.
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The title compound, C9H7FO, crystallizes with two independent molecules in the asymmetric unit, in which corresponding bond lengths are the same within experimental error. The five-membered ring in each molecule is almost planar, with r.m.s. deviations of 0.016 and 0.029 Å. In the crystal, molecules form sheets parallel to (1 0 0) via C—HO and C—HF interactions with FF contacts [3.1788 (16) and 3.2490 (16) Å] between the sheets.
O and C—HF interactions with FF contacts [3.1788 (16) and 3.2490 (16) Å] between the sheets.Keywords: crystal structure.
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In the crystal structure of the title compound, C6H5ClIN, the amino group engages in N—HN hydrogen bonding, creating [100] chains. A ClI contact is observed [3.7850 (16) Å]. The parallel planes of neigbouring molecules reveal highly offset π-stacking characterized by a centroid–centroid distance of 4.154 (1), a centroid-to-plane distance of 3.553 (3) and ring-offset slippage of 2.151 (6) Å.
N hydrogen bonding, creating [100] chains. A ClI contact is observed [3.7850 (16) Å]. The parallel planes of neigbouring molecules reveal highly offset π-stacking characterized by a centroid–centroid distance of 4.154 (1), a centroid-to-plane distance of 3.553 (3) and ring-offset slippage of 2.151 (6) Å. 
