Acta Crystallographica Section E

Structure Reports Online

Volume 68, Part 8 (August 2012)

organic compounds

nk2159 scheme

Acta Cryst. (2012). E68, o2346 [ doi:10.1107/S1600536812029741 ]

N-[(2Z,4Z)-4-Benzylidene-6-chloro-1,4-dihydropyrido[2,3-d][1,3]thiazin-2-ylidene]benzamide

M. A. Fernandes, D. C. Levendis and D. H. Reid

Abstract: In the crystal structure of the title compound, C₂₁H₁₄ClN₃OS, molecules assemble into inversion dimers via pairs of N-HN hydrogen bonds involving the N-H hydrogen of the thiazine ring and the N atom of the pyridine ring. There is a close intramolecular contact [2.570 (2) Å] between the carbonyl O atom of the benzamide and the S atom of the puckered thiazine ring. The title compound can exist in two tautomeric forms, viz. amino or imino. The observed structure is compatible with the imino form on the basis of observed residual electron density and the two C-N bond lengths of 1.308 (2) and 1.353 (2) Å.


	Hyper-Text Markup Language (HTML) file [ doi:10.1107/S1600536812029741/nk2159sup0.html ] Supplementary materials

	Chemical Markup Language (CML) file (6.8 kbytes) [ doi:10.1107/S1600536812029741/nk2159Isup3.cml ] Supplementary material

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