Crystal structure of 2-methyl-amino-3-nitro-4-p-tolyl-pyrano[3,2-c]chromen-5(4H)-one.
Acta Crystallogr E Crystallogr Commun
; 71(Pt 3): o158-9, 2015 Mar 01.
Article
em En
| MEDLINE
| ID: mdl-25844225
ABSTRACT
In the racemic title compound, C20H16N2O5, the pyran ring adopts a shallow envelope conformation, with the stereogenic C atom displaced from the other atoms by 0.273â
(2)â
Å. The dihedral angle between the fused-ring system and the pendant p-tolyl group is 87.62â
(7)°. The mol-ecular conformation is consolidated by an intra-molecular N-Hâ¯O hydrogen bond, which generates an S(6) ring. In the crystal, mol-ecules are linked by C-Hâ¯O inter-actions, resulting in [010] chains.
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Ano de publicação:
2015
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Article