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Acta Crystallogr Sect E Struct Rep Online. 2009 Dec 24;66(Pt 1):o243. doi: 10.1107/S160053680905435X.


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University of Virginia, Department of Molecular Physiology & Biological Physics, 1340 Jefferson Park Avenue, Charlottesville, VA 22908, USA.


In the crystal structure of the title compound, C(7)H(4)Cl(2)O, the mol-ecules form a network of weak C-H⋯O inter-actions involving the aldehyde O atom and the ortho-H atom on the benzene ring together with C-H⋯O inter-actions between the formyl groups. Together, these connect the mol-ecules into (10) layers, which are stabilized additionally by π-π stacking inter-actions of the benzene rings [centroid-centroid distance = 3.772 (1) Å]. The aldehyde group is twisted relative to the benzene ring by 7.94 (13)°.

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