Crystal structures of three 6-substituted coumarin-3-carboxamide derivatives

Gomes, Lígia R.; Low, John Nicolson; Fonseca, André; Matos, Maria João; Borges, Fernanda

http://hdl.handle.net/10284/8173

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Abstract(s)

Three coumarin derivatives, viz. 6-methyl-N-(3-methyl-phen-yl)-2-oxo-2H-chromene-3-carboxamide, C18H15NO3 (1), N-(3-meth-oxy-phen-yl)-6-methyl-2-oxo-2H-chromene-3-carboxamide, C18H15NO4 (2), and 6-meth-oxy-N-(3-meth-oxy-phen-yl)-2-oxo-2H-chromene-3-carboxamide, C18H15NO5 (3), were synthesized and structurally characterized. The mol-ecules display intra-molecular N-H⋯O and weak C-H⋯O hydrogen bonds, which probably contribute to the approximate planarity of the mol-ecules. The supra-molecular structures feature C-H⋯O hydrogen bonds and π-π inter-actions, as confirmed by Hirshfeld surface analyses.

Keywords

Carboxamide Coumarin Crystal structure

URI

http://hdl.handle.net/10284/8173

Citation

Gomes, L. R., Low, J. N., Fonseca, A., Matos, M. J., & Borges, F. (2016). Crystal structures of three 6-substituted coumarin-3-carboxamide derivatives. Acta crystallographica. Section E, Crystallographic communications, 72(Pt 7), 926–932. doi:10.1107/S2056989016008665