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Crystal structure of 3-(2,2-di-bromo-acet-yl)-4-hy-droxy-2H-chromen-2-one.

ABSTRACT: The title compound, C11H6Br2O4, is a new coumarin derivative obtained from the reaction of 3-acetyl-4-hy-droxy-2H-chromen-2-one with bromine in acetic acid. The hy-droxyl group in involved in an intra-molecular O-H?O hydrogen bond. In the crystal, ?-? inter-actions between the rings of the bicycle [inter-centroid distances = 3.498?(2) and 3.539?(2)?Å] pack mol-ecules into stacks along the b axis, and weak inter-molecular C-H?O hydrogen bonds further link these stacks into layers parallel to the ab plane.

SUBMITTER: Brahmia A 

PROVIDER: S-EPMC4384588 | biostudies-literature | 2015 Feb

REPOSITORIES: biostudies-literature

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Crystal structure of 3-(2,2-di-bromo-acet-yl)-4-hy-droxy-2H-chromen-2-one.

Brahmia Ameni A   Ghouili Afef A   Ben Hassen Rached R  

Acta crystallographica. Section E, Crystallographic communications 20150103 Pt 2

The title compound, C11H6Br2O4, is a new coumarin derivative obtained from the reaction of 3-acetyl-4-hy-droxy-2H-chromen-2-one with bromine in acetic acid. The hy-droxyl group in involved in an intra-molecular O-H⋯O hydrogen bond. In the crystal, π-π inter-actions between the rings of the bicycle [inter-centroid distances = 3.498 (2) and 3.539 (2) Å] pack mol-ecules into stacks along the b axis, and weak inter-molecular C-H⋯O hydrogen bonds further link these stacks into layers parallel to the  ...[more]

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