Crystal structure of 3-[2-(4-methyl­phen­yl)ethyn­yl]-2H-chromen-2-one

Acta Crystallographica Section E: Crystallographic Communications

Caracelli, I.³  Tiekink, E.R.T.³  Stefani, H.A.⁶  Gueogjian, K.⁷  Maganhi, S.H.^1,10 

[1] Departamento de FarmáDepartment of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia;Departmento de Fícia, Faculdade de Ciências Farmacêo Carlos, 13565-905 São Carlos, SP, Brazil;o Paulo, 05508-900 São Paulo-SP, Brazil;sica, Universidade Federal de Sãuticas, Universidade de Sã

关键词: CRYSTAL STRUCTURE;    COUMARINS;    ASYMMETRIC ALKYNE;    HYDROGEN BONDING;    C-H...[PI] INTERACTIONS;   

DOI  :  10.1107/S2056989014027790

学科分类：数学（综合）

来源: International Union of Crystallography

【 摘 要 】

The coumarin ring system in the title asymmetric alkyne, C18H12O2, is approximately planar (r.m.s. deviation of the 11 non-H atoms = 0.048 Å), and is inclined with respect to the methyl­benzene ring, forming a dihedral angle of 33.68 (4)°. In the crystal, supra­molecular zigzag chains along the c-axis direction are formed via weak C—H⋯O hydrogen bonds, and these are connected into double layers via weak C—H⋯π inter­actions; these stack along the a axis.

【 授权许可】

CC BY