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In the title compound, C16H8F6N2, the dihedral angle between the pyrazole and di­fluoro­benzene rings is 50.30 (13)°, while those between the pyrazole and fluoro­benzene rings and between the di­fluoro­benzene and fluoro­benzene rings are 38.56 (13) and 53.50 (11)°, respectively. Aromatic π–π stacking inter­actions between adjacent di­fluoro­benzene rings [centroid–centroid separation = 3.6082 (11) Å] link the mol­ecules into dimers parallel to [21-2].

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The title compound, C10H9NO2, is almost planar (r.m.s. deviation for the non-H atoms = 0.027 Å) and the conformation across the C=N bond is syn. Further, the O atom of the benzo­furan ring is syn to the CH3 group in the side chain. In the crystal, mol­ecules are linked into C(3) chains propagating in [010] by O—H...N hydrogen bonds.

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In the title compound, C10H9NO3, the dihedral angle between the benzo­furan ring system (r.m.s. deviation for the non-H atoms = 0.009 Å) and the –C—C(O)—N– segment is 83.76 (1)°. In the crystal, mol­ecules are linked by N—H...O and O—H...O hydrogen bonds, generating (001) sheets, which feature C(4) and C(10) chains.

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The title compound, C8H6FNO2, is almost planar (r.m.s. deviation for the non-H atoms = 0.019 Å) and the conformation across the C=C bond is trans. The C and H atoms of the side chain are disordered over two sets of sites in a 0.56 (3):0.44 (3) ratio. In the crystal, mol­ecules are linked by C—H...O inter­actions, thus forming C(5) chains propagating in [001].

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In the title compound, C14H12N2O5S, the dihedral angle between the aromatic rings is 86.29 (1)° and the conformation between the C=O bond of the amide group and the meta-NO2 group is syn. The C—S—N—C torsion angle is −65.87 (19)° and the mol­ecule has an L-shaped conformation. In the crystal, the mol­ecules are connected into inversion dimers through pairs of N—H...O hydrogen bonds and C—H...O inter­actions forming R22(8) and R22(14) loops, respectively. The dimers are connected by further C—H...O inter­actions, thereby forming (100) sheets.

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In the title compound, C14H13NO4S, the dihedral angle between the aromatic rings is 69.81 (1)°; the dihedral angle between the planes defined by the S—N—C=O segment of the central chain and the sulfonyl benzene ring is 74.91 (1)°. In the crystal, the mol­ecules are linked by weak N—H...O hydrogen bonds into C(4) chains running along [100]. The mol­ecules in adjacent chains are linked by weak C—H...O inter­actions, generating R22 (16) dimeric pairs. Weak C—H...π inter­actions connect the double chains into (001) sheets.

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In the title compound, C15H15NO4S, the dihedral angle between the aromatic rings is 80.81 (1)° and the dihedral angle between the planes defined by the S—N—C=O fragment and the sulfonyl benzene ring is 86.34 (1)°. In the extended structure, dimers related by a crystallographic twofold axis are connected by pairs of both N—H...O hydrogen bonds and C—H...O inter­actions, which generate R22(8) and R22(14) loops, respectively. A weak aromatic π–π stacking inter­action is also observed [centroid–centroid separation = 3.7305 (3) Å].

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In the title compound, C14H12ClNO4S, the dihedral angle between the aromatic rings is 82.07 (1)° and the dihedral angle between the planes defined by the S—N—C=O fragment and the sulfonyl benzene ring is 82.46 (3)°. In the crystal, the mol­ecules are linked into C(4) chains running along [001] by strong N—H...O hydrogen bonds. A C—H...O intera­ction reinforces the [001] chains: its graph-set symbol is C(7). The chains are cross-linked into (100) sheets by further C—H...O inter­actions as C(6) chains along [001]. The structure also features weak π–π stacking inter­actions [centroid–centroid distances = 3.577 (1) and 3.8016 (1) Å].

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In the title compound, C14H21NO, the conformation across the N—C(O) bond is syn-periplanar, the C—N—C—C torsion being −5.9 (5)°. The atoms of the ethyl group attached to the N atom are disordered over two sets of sites with occupancy ratios of 0.65 (2):0.35 (2) (CH2) and 0.689 (14):0.311 (14) (CH3)are linked by very weak C—H...O inter­actions forming C(8) chains along [001]. C—H...π inter­actions link the mol­ecules along the c-axis direction.

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In the title compound, the mean plane of the cyclo­hexane ring is almost normal to the benzene ring and to the mean plane of the 1,2,4-thia­diazinane ring. In the crystal, mol­ecules are linked by N—H...O hydrogen bonds, forming chains along [10\overline{1}], which are in turn linked via C—H...π inter­actions, forming sheets parallel to (010).

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In the title compound, C16H11FN4S, the dihedral angles between the triazole ring and the phenyl and fluoro­benzene rings are 23.22 (17) and 18.06 (17)°, respectively. The six-membered heterocyclic ring adopts a distorted envelope conformation, with the methyl­ene C atom as the flap. In the crystal, the mol­ecules are linked by two C—H...N and C—H...F inter­actions along [010], forming C(5), C(8) and C(13) chains repectively. C—H...π inter­actions involving the phenyl ring and π–π inter­actions [centroid–centroid separation for triazole rings = 3.5660 (18) Å] are also observed.

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In the title compound, C18H18N2O4S, the dihedral angle between the aromatic rings is 33.71 (9)° and an intra­molecular C—H...O hydrogen bond closes an S(6) ring. In the crystal, mol­ecules are linked by C—H...O and C—H...N hydrogen bonds to generate a three-dimensional network. A very weak aromatic π–π stacking inter­ction is also observed [centroid–centroid separation = 3.9524 (10) Å].

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The crystal structure of ethyl (6-hy­droxy-1-benzo­furan-3-yl)acetate sesquihydrate exhibits a one-dimensional hydrogen-bond motif consisting of R_{6}^{6}(12) rings joined at water mol­ecules located on a twofold rotation axis.

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In the title compound, C10H9NO3, the dihedral angle between the benzene and pyrrolidine rings is 53.9 (1)°. In the crystal, mol­ecules are linked through strong O—H...O hydrogen bonds into zigzag C(8) chains running along [010]. The chains are linked by C—H...π inter­actions forming sheets lying parallel to (100).
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