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2-Bromo-maleic acid.


ABSTRACT: The title compound, C(4)H(3)BrO(4), was obtained from a solution of meso-2,3-dibromo-succinic acid and vanadium(IV) oxide. The crystals are isostructural with chloro-maleic acid and the mol-ecule has two geometrically different carboxyl groups, one of which has delocalized C-O bonds and is essentially coplanar with the olefinic bond plane [give dihedral angle 15.08?(16)°], whereas the other has a localized C=O bond and forms a dihedral angle of 99.6?(3)° with the C=C bond plane. Two symmetry-independent O-H?O hydrogen bonds link the mol-ecules into layers parallel to the bc plane.

SUBMITTER: Fischer A 

PROVIDER: S-EPMC2969897 | biostudies-other | 2009

REPOSITORIES: biostudies-other

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2-Bromo-maleic acid.

Fischer Andreas A  

Acta crystallographica. Section E, Structure reports online 20090826 Pt 9


The title compound, C(4)H(3)BrO(4), was obtained from a solution of meso-2,3-dibromo-succinic acid and vanadium(IV) oxide. The crystals are isostructural with chloro-maleic acid and the mol-ecule has two geometrically different carboxyl groups, one of which has delocalized C-O bonds and is essentially coplanar with the olefinic bond plane [give dihedral angle 15.08 (16)°], whereas the other has a localized C=O bond and forms a dihedral angle of 99.6 (3)° with the C=C bond plane. Two symmetry-ind  ...[more]

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