Volume 66 Received 30 September 2010 | ||||||||||
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aGansu Key Laboratory of Polymer Materials, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, People's Republic of China
Correspondence e-mail: dayuxia@nwnu.edu.cn
In the title compound, C14H9NO2, the dihedral angle between the pyridine ring and the lactone ring is 10.40 (3)°. The coumarin ring system is nearly planar, with a dihedral angle of 1.40 (2)° between the lactone and benzene rings. An intramolecular C-H
O hydrogen bond occurs. In the crystal, inversion dimers linked by pairs of C-H
O interactions occur, generating R22(14) loops.
For background to the structures and properties of coumarins, see: Fylaktakidou et al. (2004
); Griffiths et al. (1995
); Moffett (1964
); Ren & Huo (2008
); Ren et al. (2010
); Trenor et al. (2004
); Walshe et al. (1997
); Yu et al. (2006
); Yu, Yang et al. (2010
); Yu, Zhang et al. (2010
). For reference bond lengths, see: Allen et al. (1987
).
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Data collection: SMART (Siemens, 1996
); cell refinement: SAINT (Siemens, 1996
); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008
); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008
); molecular graphics: SHELXTL (Sheldrick, 2008
); software used to prepare material for publication: SHELXTL.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: HB5667 ).
This work was supported by the Natural Science Foundation of Gansu Province (3ZS061-A25-019).
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