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International Union of Crystallography, Acta Crystallographica Section E: Structure Reports Online, 3(69), p. o345-o345, 2013

DOI: 10.1107/s1600536813002948

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3-(4-Meth­oxy­benzo­yl)-6-nitro­coumarin

Journal article published in 2013 by Saleta Vazquez-Rodriguez ORCID, Eugenio Uriarte, Lourdes Santana
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

In the title coumarin derivative (also known as 2H-chromen-2-one or 2H-1-benzopyran-2-one), C17H11NO6, the coumarin ring system is nearly planar, with a dihedral angle of 3.35 (9)° between the pyrone and the benzene rings. The dihedral angle between the planes formed by the coumarin ring system and the benzene substituent is 54.60 (7)°, clearly showing the non-coplanarity of the whole aromatic system. The crystal studied was a non-merohedral twin; the minor component refined to approximately 0.44.