Acta Cryst. (2011). E67, o848  [ doi:10.1107/S1600536811008178 ]

4-[2-(Benzylsulfanyl)acetyl]-3,4-dihydroquinoxalin-2(1H)-one

W. Nasir, M. A. Munawar, S. Nadeem, R. Amjad and A. Adnan

Abstract: In the title compound, C₁₇H₁₆N₂O₂S, 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)°. Intermolecular N-HO hydrogen-bonding interactions forms inversion dimers which lead to eight-membered R₂²(8) ring motifs. The dimers are further connected by C-HO interactions.

Online 12 March 2011

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