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. 2011 Apr 1;67(Pt 4):o848.
doi: 10.1107/S1600536811008178. Epub 2011 Mar 12.

4-[2-(Benzyl-sulfan-yl)acet-yl]-3,4-dihydro-quinoxalin-2(1H)-one

Waqar Nasir, Munawar Ali Munawar, Sohail Nadeem, Rana Amjad, Ahmad Adnan

4-[2-(Benzyl-sulfan-yl)acet-yl]-3,4-dihydro-quinoxalin-2(1H)-one

Waqar Nasir et al. Acta Crystallogr Sect E Struct Rep Online. .

Abstract

In the title compound, C(17)H(16)N(2)O(2)S, the pyrazinone ring is non-planar (r.m.s. deviation = 0.1595 Å), with maximum deviations for the 4-position N atom and the adjacent non-fused-ring C atom of 0.2557 (15) and -0.2118 (16) Å, respectively. The dihedral angle between the benzyl ring and pyrazinone rings is 30.45 (18)°. Inter-molecular N-H⋯O hydrogen-bonding inter-actions forms inversion dimers which lead to eight-membered R(2) (2)(8) ring motifs. The dimers are further connected by C-H⋯O inter-actions.

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Figures

Fig. 1.
Fig. 1.
The labelled diagram of structure of (I) with thermal ellipsoids drawn at the 50% probability level.
Fig. 2.
Fig. 2.
The unit cell packing diagram of (I) showing the hydrogen bondings with dashed lines.
See this image and copyright information in PMC

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