Acta Crystallographica Section C

Crystal Structure Communications

Volume 65, Part 8 (August 2009)

organic compounds

gd3288 scheme

Acta Cryst. (2009). C65, o396-o399 [ doi:10.1107/S0108270109020551 ]

Weak intermolecular interactions in isomorphous 5-(2-chloroethoxy)-2,3-dihydro-1,4-benzodioxine and 5-(2-bromoethoxy)-2,3-dihydro-1,4-benzodioxine: bonding or nonbonding interactions

R. Kruszynski

Abstract: The title compounds, C₁₀H₁₁ClO₃, (I), and C₁₀H₁₁BrO₃, (II), are isomorphous and effectively isostructural; all of the interatomic distances and angles are normal. The structures exhibit long intermolecular C-HO and C-H [pi] contacts with attractive energies ranging from 1.17 to 2.30 kJ mol^-1. Weak C-HO hydrogen bonds form C(3) and C(4) motifs, combining to form a two-dimensional R₃⁴(12) net. No face-to-face stacking interactions are observed.

Formula: C₁₀H₁₁ClO₃ and C₁₀H₁₁BrO₃


	Structure factor file (CIF format) (76.0 kbytes) [ doi:10.1107/S0108270109020551/gd3288Isup2.hkl ] Contains datablock I

	Structure factor file (CIF format) (86.0 kbytes) [ doi:10.1107/S0108270109020551/gd3288IIsup3.hkl ] Contains datablock II

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