Jin Shen, J. Qian, J. Gu
Mar 10, 2012
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Influential Citations
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Journal
Acta Crystallographica Section E: Structure Reports Online
Abstract
In the title compound, [systematic name: 9-fluoro-2,3-dihydro-3-methyl-10-(4-methylpiperazin-1-yl)-7-oxo-7H-pyrido[1,2,3-ij][1,2,4]benzoxadiazine-6-carboxylic acid], C17H19FN4O4, the carbonyl and carboxyl groups are coplanar with the quinoline ring, making a dihedral angle of 2.39 (2)°. The piperazine ring adopts a chair conformation and the oxadiazinane ring displays an envelope conformation with the CH2 group at the flap displaced by 0.650 (2) Å from the plane through the other five atoms. The molecular structure exhibits an S(6) ring motif, owing to an intramolecular O—H⋯O hydrogen bond. In the crystal, weak C—H⋯F hydrogen bonds link molecules into layers parallel to the ab plane.