N-(3-Methylphenyl)quinoxalin-2-amine monohydrate

Ariffin, Azhar and Tiekink, E.R.T. and Idris, A. and Abdullah, Z. and Fairuz, Z.A. and Ng, S.W. (2010) N-(3-Methylphenyl)quinoxalin-2-amine monohydrate. Acta Crystallographica Section E: Structure Reports Online, 66 (9). O2276-U60. ISSN 1600-5368, DOI https://doi.org/10.1107/s1600536810031260.

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The quinoxaline system in the title hydrate, C(15)H(13)N(3)center dot H(2)O, is roughly planar, the r.m.s. deviation for the 18 non-H atoms being 0.188 angstrom; this conformation features a short intramolecular C-H center dot center dot center dot N(pyrazine) interaction. In the crystal, the amine H atom forms an N-H center dot center dot center dot O hydrogen bond to the water molecule, which in turn forms two O-H center dot center dot center dot N hydrogen bonds to the pyrazine N atoms of different organic molecules. These interactions lead to supramolecular arrays in the bc plane that are two molecules thick; additional pi-pi interactions stabilize the layers [ ring centroid-centroid distance = 3.5923 (7) angstrom]. The layers stack along the a-axis direction via C-H center dot center dot center dot pi contacts.

Item Type: Article
Additional Information: Department of Chemistry, Faculty of Science Building, University of Malaya, 50603 Kuala Lumpur, MALAYSIA
Uncontrolled Keywords: Quinoxaline system; Angstrom; Short intramolecular; N(pyrazine) interaction; Crysta; Amine; Water molecule; Hydrogen bonds; Pyrazine N; Organic molecules; Supramolecular arrays
Subjects: Q Science > QD Chemistry
Divisions: Faculty of Science > Department of Chemistry
Depositing User: Miss Malisa Diana
Date Deposited: 03 Jul 2013 04:33
Last Modified: 31 Jan 2019 01:05
URI: http://eprints.um.edu.my/id/eprint/8085

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