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Crystal structure of (Z)-N'-[1-(3-methyl-5-oxo-1-phenyl-1,5-di-hydro-4H-pyrazol-4-yl-idene)prop-yl]benzene-sulfono-hydrazide.

ABSTRACT: The title compound, C19H20N4O3S, was synthesized by refluxing equimolar amounts of 1-phenyl-3-methyl-4-propionylpyrazol-5-one and benzene-sulfonyl hydrazide in ethanol. The compound crystallizes in the keto form and the carbonyl O atom forms an intra-molecular N-H?O hydrogen bond with the neighbouring NH group. There is also C-H?O short contact involving the neighbouring phenyl ring. Probably as a result of this, the phenyl ring is inclined to the pyrazolone ring by only 7.58?(12)°. The dihedral angle between the phenyl ring and the benzene-sulfonyl ring is 22.78?(11)°. In the crystal, mol-ecules are linked by pairs of N-H?O hydrogen bonds, forming inversion dimers with an R (2) 2(14) ring motif. The dimers are linked via pairs of C-H?O hydrogen bonds, forming chains propagating along [100].

SUBMITTER: He CC

PROVIDER: S-EPMC4420066 | biostudies-literature | 2015 May

REPOSITORIES: biostudies-literature

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Crystal structure of (Z)-N'-[1-(3-methyl-5-oxo-1-phenyl-1,5-di-hydro-4H-pyrazol-4-yl-idene)prop-yl]benzene-sulfono-hydrazide.

He Chuan-Chuan CC Xu Guan-Cheng GC

Acta crystallographica. Section E, Crystallographic communications 20150415 Pt 5

The title compound, C19H20N4O3S, was synthesized by refluxing equimolar amounts of 1-phenyl-3-methyl-4-propionylpyrazol-5-one and benzene-sulfonyl hydrazide in ethanol. The compound crystallizes in the keto form and the carbonyl O atom forms an intra-molecular N-H⋯O hydrogen bond with the neighbouring NH group. There is also C-H⋯O short contact involving the neighbouring phenyl ring. Probably as a result of this, the phenyl ring is inclined to the pyrazolone ring by only 7.58 (12)°. The dihedral ...[more]

PMID: 25995862

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