6,7-Dichloro-3-(2,4-dichlorobenzyl)quinoxalin-2(1H)-one

Jinpeng Zhang,Qian Wang,Lichun Xu,Yinan Wang

doi:10.1107/s160053681203098x

Jinpeng Zhang, Qian Wang + Show 2 more

Open Access

https://doi.org/10.1107/s160053681203098x

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Abstract

In the title compound, C15H8Cl4N2O, the quinoxaline ring system is almost planar, with a dihedral angle between the benzene and pyrazine rings of 3.1 (2)°. The 2,4-dichlorophenyl ring is approximately perpendicular to the pyrazine ring, with a dihedral angle of 86.47 (13)° between them. The crystal packing features intermolecular N—H⋯O hydrogen bonds and π–π stacking interactions, with centroid–centroid distances in the range 3.699 (3)–4.054 (3) Å.

Highlights

In the title compound, C15H8Cl4N2O, the quinoxaline ring system is almost planar, with a dihedral angle between the benzene and pyrazine rings of 3.1 (2)
The 2,4-dichlorophenyl ring is approximately perpendicular to the pyrazine ring, with a dihedral angle of 86.47 (13) between them
During the synthesis of some quinoxalin derivatives, the title compound, (I) was isolated and its structure was confirmed by X-ray diffraction

Summary

Data collection

R factor = 0.055; wR factor = 0.103; data-to-parameter ratio = 13.0. C15H8Cl4N2O, the quinoxaline ring system is almost planar, with a dihedral angle between the benzene and pyrazine rings of 3.1 (2). The 2,4-dichlorophenyl ring is approximately perpendicular to the pyrazine ring, with a dihedral angle of 86.47 (13) between them. The crystal packing features intermolecular N—H O hydrogen bonds and – stacking interactions, with centroid–centroid distances in the range 3.699 (3)–4.054 (3) Å

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Crystal data

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