Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2008 Oct 31;64(Pt 11):o2234.
doi: 10.1107/S1600536808033989.

1-Ethyl-3-methyl-quinoxalin-2(1H)-one

Hanane Benzeid, Laure Vendier, Youssef Ramli, Bernard Garrigues, El Mokhtar Essassi

1-Ethyl-3-methyl-quinoxalin-2(1H)-one

Hanane Benzeid et al. Acta Crystallogr Sect E Struct Rep Online. .

Abstract

The asymmetric unit of the title compound, C(11)H(12)N(2)O, contains two independent mol-ecules. In the crystal structure, inter-molecular C-H⋯O hydrogen bonds link the mol-ecules. There are π-π contacts between the quinoxaline rings [centroid-centroid distances = 3.446 (2), 3.665 (2), 3.645 (3) and 3.815 (3) Å]. There also exist C-H⋯π contacts between the methyl groups and the quinoxaline rings.

PubMed Disclaimer

Figures

Fig. 1.
Fig. 1.
The molecular structure of the title molecule, with the atom-numbering scheme. Hydrogen bond is shown as dashed line.
Fig. 2.
Fig. 2.
A partial packing diagram. Hydrogen bonds are shown as dashed lines [symmetry code: (') -x, -y, -z].
See this image and copyright information in PMC

References

    1. Allen, F. H., Kennard, O., Watson, D. G., Brammer, L., Orpen, A. G. & Taylor, R. (1987). J. Chem. Soc. Perkin Trans. 2, pp. S1–19.
    1. Altomare, A., Cascarano, G., Giacovazzo, C., Guagliardi, A., Burla, M. C., Polidori, G. & Camalli, M. (1994). J. Appl. Cryst.27, 435.
    1. Amin, A. S. (2003). Spectrochim. Acta Part A, 59, 1025–1033. - PubMed
    1. Boutti, D. & Lecolier, S. (1975). Fr. Patent 2 249 879.
    1. Farrugia, L. J. (1997). J. Appl. Cryst.30, 565.