ISSN:
1600-5759
Source:
Crystallography Journals Online : IUCR Backfile Archive 1948-2001
Topics:
Chemistry and Pharmacology
,
Geosciences
,
Physics
Notes:
Although molecules of the title compound, 3,4-dichloro-2,5-dihydrofuran-2,5-dione (dichloromaleic anhydride, C4Cl2O3), (I), possess approximate non-crystallographic C2v symmetry, the two chlorine substituents deviate from the ring plane. Their deviations are in the same direction, but with values of 0.0356 (17) and 0.0167 (17) Å, they differ significantly in magnitude. The closest intermolecular contact is of 2.888 (2) Å between a carbonyl O atom and the C atom of a carbonyl group, with the O...C direction orthogonal to the C=O bond [O5...C2i=O2i 93.6 (2)°; symmetry code: (i) 3 \over 2 − x, −½ + y, z]. These contacts form infinite chains of molecules running parallel to the crystallographic b direction.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1107/S0108270100007034
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