3-(4-Meth-oxy-benzo-yl)-6-nitro-coumarin.
Acta Crystallogr Sect E Struct Rep Online
; 69(Pt 3): o345, 2013 Mar 01.
Article
en En
| MEDLINE
| ID: mdl-23476538
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 3.35â
(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 54.60â
(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.
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Acta Crystallogr Sect E Struct Rep Online
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2013
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Article
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España