Acta Crystallographica Section E

Structure Reports Online

Volume 69, Part 1 (January 2013)

organic compounds

gk2545 scheme

Acta Cryst. (2013). E69, o130-o131    [ doi:10.1107/S1600536812051033 ]

Ethyl (E)-3-(anthracen-9-yl)prop-2-enoate

B. Bugenhagen, Y. Al Jasem, B. al Hindawi, N. Al Rawashdeh and T. Thiemann

Abstract: In the asymmetric unit of the title compound, C19H16O2, there are two symmetry-independent molecules (A and B) that differ in the conformation of the ester ethoxy group. In the crystal, the molecules form inversion dimers via pairs of C-H...O interactions. Within the dimers, the anthracenyl units have interplanar distances of 0.528 (2) and 0.479 (2) Å for dimers of molecules A and B, respectively. Another short C-H...O contact between symmetry-independent dimers links them into columns parallel to [10-1]. These columns are arranged into (111) layers and there are [pi]-[pi] stacking interactions [centroid-centroid distances = 3.6446 (15) and 3.6531 (15) Å] between the anthracenyl units from the neighbouring columns. In addition, there are C-H...[pi] interactions between the anthracenyl unit of dimers A and dimers B within the same column.

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