Crystal structure of methyl 2-(7-hy-droxy-2-oxo-2H-chromen-4-yl)acetate

Sammer Yousuf; Shafqat Hussain; Khalid Mohammed Khan; Muhammad Shabeer; Shahnaz Perveen

doi:10.1107/S2056989015014061

Crystal structure of methyl 2-(7-hy-droxy-2-oxo-2H-chromen-4-yl)acetate

Acta Crystallogr E Crystallogr Commun. 2015 Aug 22;71(Pt 9):o677-8. doi: 10.1107/S2056989015014061. eCollection 2015 Sep 1.

Authors

Sammer Yousuf¹, Shafqat Hussain², Khalid Mohammed Khan¹, Muhammad Shabeer¹, Shahnaz Perveen³

Affiliations

¹ H.E.J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan.
² Department of Chemistry, Karakoram International University, Gilgit, Pakistan.
³ PCSIR Laboratories, Karachi, Pakistan.

Abstract

In the title coumarin derivative, C12H10O5, the fused ring system is almost planar (r.m.s deviation = 0.016 Å). The Car-C-C=O torsion angle of the side chain is -8.4 (2)° In the crystal, mol-ecules are linked by O-H⋯O hydrogen bonds, generating C(8) chains propagating in the [100] direction. The chains are cross-linked by weak C-H⋯O inter-actions, thereby generating undulating (001) sheets.

Keywords: chromene; coumarin; crystal structure; ester; hydrogen bonding.