Volume 65 Received 1 December 2008 | ||||||||||
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aDepartment of Chemistry, University of Podlasie, ul. 3 Maja 54, 08-110 Siedlce, Poland,bDepartment of Synthesis and Chemical Technology of Pharmaceutical Substances, Medical University, ul. Staszica 6, 20-081 Lublin, Poland,cDepartment of Pharmacology and Pharmacodynamics, Medical University, ul. Staszica 4, 20-081 Lublin, Poland, and dInstitute of General and Ecological Chemistry, Technical University, ul. Zwirki 115, 90-924 Lodz, Poland
Correspondence e-mail: wwysocki@ap.siedlce.pl
In the crystal structure of the title compound, C17H17ClN4O, the existence of only one 2-imino-oxo of the five possible N-amino-imino/O-keto-hydroxy tautomers is observed and the dihedral angle between the aromatic rings is 29.78 (11)°. The molecular conformation is stabilized by intramolecular C-H
N, N-H
O and C-H
O hydrogen bonds, in each case generating a six-membered ring. In the crystal structure, the glide-plane-related molecules are linked into C(4) amide chains by intermolecular N-H
O hydrogen bonds, and an intermolecular C-H
O link also occurs.
For general background, synthesis, biological activity and related structures, see: Matosiuk et al. (2001
, 2005
); Karczmarzyk et al. (2004
); Wysocki et al. (2006
). For hydrogen-bond motifs, see: Steiner (2002
); Bernstein et al. (1995
).
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Data collection: KM4B8 (Galdecki et al., 1996
); cell refinement: KM4B8; data reduction: DATAPROC (Galdecki et al., 1995
); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008
); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008
); molecular graphics: ORTEP-3 (Farrugia, 1997
); software used to prepare material for publication: WinGX (Farrugia, 1999
).
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: HB2873 ).
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