Crystal structure of (4E)-4-(8-methoxy-2H-chromen-2-ylidene)-3-methyl-1-phenyl-1H-pyrazol-5(4H)-one

Acta Crystallographica Section E: Crystallographic Communications

Muhammad Shahid¹  Khizar Iqbal Malik¹  Muhammad Salim¹  Munawar Ali Munawar¹  Muhammad Nawaz Tahir² 

[1] Department of Chemistry, University of the Punjab, Lahore, Punjab, Pakistan;Department of Physics, University of Sargodha, Sargodha, Punjab, Pakistan;

关键词: crystal structure;    pyrazolone;    π–π interactions;   

DOI  :  10.1107/S2056989015009445

来源: DOAJ

【 摘 要 】

In the title compound, C20H16N2O3, the phenyl substituent attached to the pyrazole ring makes a dihedral angle of 4.87 (7)° with the rest of the molecule. In the crystal, molecules are connected into inversion dimers of the R22(14) type by pairs of C—H...O interactions. π–π interactions exist between the benzene and pyrazole rings at a distance of 3.701 (1) Å. Similarly, π–π interactions are present at a centroid–centroid distance of 3.601 (1) Å between the oxygen-containing heterocyclic ring and methoxy substituted aromatic ring of a neighbouring molecule. Additional C—H...π and C=O...π interactions are also observed.

【 授权许可】

Unknown