Acta Cryst. (2007). C63, o239-o242  [ doi:10.1107/S0108270107008712 ]

Carbonyl-carbonyl, carbonyl- and carbonyl-halogen dipolar interactions as the directing motifs of the supramolecular structure of ethyl 6-chloro-2-oxo-2H-chromene-3-carboxylate and ethyl 6-bromo-2-oxo-2H-chromene-3-carboxylate

R. J. Santos-Contreras, F. J. Martínez-Martínez, E. V. García-Báez, I. I. Padilla-Martínez, A. L. Peraza and H. Höpfl

Formula: C₁₂H₉ClO₄ and C₁₂H₉BrO₄

Online 17 March 2007

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