Crystal structure of 3-[2-(thiophen-3-yl)ethynyl]-2H-chromen-2-one

Abstract

In the title compound, C15H8O2S, the coumarin moiety is approximately planar (r.m.s. deviation of the 11 non-H atoms = 0.025 Å) and is slightly inclined with respect to the plane of the thiophen-3-yl ring, forming a dihedral angle of 11.75 (8)°. In the crystal, the three-dimensional architecture features a combination of coumarin–thiophene C—H...π and π–π [inter-centroid distance = 3.6612 (12) Å] interactions.

Keywords

• crystal structure
• coumarin
• asymmetric alkyne
• C—H...π interactions
• π–π interactions