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(2E)-3-(1,3-Diphenyl-1H-pyrazol-4-yl)-1-phenyl-prop-2-en-1-one.

ABSTRACT: In the title compound, C(24)H(18)N(2)O, the pyrazole ring is essentially planar [maximum deviation = 0.004?(1)?Å] and makes dihedral angles of 18.07?(4), 48.60?(4) and 9.13?(5)° with the phenyl rings. In the crystal, adjacent mol-ecules are connected via inter-molecular C-H?O hydrogen bonds, forming dimers. Furthermore, the crystal structure is stabilized by weak C-H?? and ?-? inter-actions, with centroid-centroid distances of 3.6808?(5)?Å.

SUBMITTER: Fun HK

PROVIDER: S-EPMC3151840 | biostudies-other | 2011 Jul

REPOSITORIES: biostudies-other

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(2E)-3-(1,3-Diphenyl-1H-pyrazol-4-yl)-1-phenyl-prop-2-en-1-one.

Fun Hoong-Kun HK Hemamalini Madhukar M Malladi Shridhar S Poojari Pradeep P Isloor Arun M AM

Acta crystallographica. Section E, Structure reports online 20110618 Pt 7

In the title compound, C(24)H(18)N(2)O, the pyrazole ring is essentially planar [maximum deviation = 0.004 (1) Å] and makes dihedral angles of 18.07 (4), 48.60 (4) and 9.13 (5)° with the phenyl rings. In the crystal, adjacent mol-ecules are connected via inter-molecular C-H⋯O hydrogen bonds, forming dimers. Furthermore, the crystal structure is stabilized by weak C-H⋯π and π-π inter-actions, with centroid-centroid distances of 3.6808 (5) Å. ...[more]

PMID: 21837132

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(E)-1-(2,4-Dichloro-phen-yl)-3-(1,3-diphenyl-1H-pyrazol-4-yl)prop-2-en-1-one.

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Crystal structure of (4Z)-4-[(2E)-3-(2-chloro-phen-yl)-1-hy-droxy-prop-2-en-1-yl-idene]-3-methyl-1-phenyl-1H-pyrazol-5(4H)-one.

Project description:In the title compound, C19H15ClN2O2, the pyrazole ring is almost planar (r.m.s. deviation = 0.002?Å) and subtends dihedral angles of 5.31?(16) and 1.86?(16)° with the phenyl and chloro-benzene rings, respectively. An intra-molecular O-H?O hydrogen bond closes an S(6) ring and a short C-H?O contact is also observed. In the crystal, mol-ecules are linked by weak C-H?O inter-actions to generate (001) sheets. Weak aromatic ?-? inter-actions between the chloro-benzene and pyrazole rings, with a centroid-centroid distance of 3.7956?(17)?Å are also observed.

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Crystal structure of (4Z)-4-[(2E)-3-(4-chloro-phen-yl)-1-hy-droxy-prop-2-en-1-yl-idene]-5-methyl-2-phenyl-1H-pyrazol-5(4H)-one.

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