Crystal structure of 8-eth­oxy-3-(4-nitro­phen­yl)-2H-chromen-2-one

Acta Crystallographica Section E: Crystallographic Communications

Walki, S.¹  Kenchanna, S.¹  Mahadevan, K.M.¹  Kumara, M.N.²  Lokanath, N.K.³  Naveen, S.⁴ 

[1] Department of Chemistry, Kuvempu University, P. G. Centre, Kadur 577 548, India;Department of Chemistry, Yuvaraja's College, University of Mysore, Mysore 570 005, India;Department of Studies in Physics, University of Mysore, Manasagangotri, Mysore 570 006, India;Institution of Excellence, University of Mysore, Manasagangotri, Mysore 570 006, India

关键词: CRYSTAL STRUCTURE;    COUMARIN;    CHROMEN;    C-H...O HYDROGEN BONDS;    [PI]-[PI] STACKING;   

DOI  :  10.1107/S2056989015019325

学科分类：数学（综合）

来源: International Union of Crystallography

【 摘 要 】

In the title compound, C17H13NO5, the coumarin ring system is essentially planar (r.m.s. deviation = 0.008 Å). The nitro­phenyl ring makes a dihedral angle of 25.27 (9)° with the coumarin ring plane. The nitro group is almost coplanar with the phenyl ring to which it is attached, making a dihedral angle of 4.3 (3)°. The eth­oxy group is inclined to the coumarin ring plane by 4.1 (2)°. Electron delocalization was found at the short bridging C—C bond with a bond length of 1.354 (2) Å. In the crystal, mol­ecules are linked via C—H⋯O hydrogen bonds, forming sheets in the bc plane. The sheets are linked via π–π stacking [centroid–centroid distances = 3.5688 (13) and 3.7514 (13) Å], forming a three-dimensional structure.

【 授权许可】

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