Ontology highlight
ABSTRACT:
SUBMITTER: Xu CL
PROVIDER: S-EPMC2971202 | biostudies-literature | 2009 Oct
REPOSITORIES: biostudies-literature
Acta crystallographica. Section E, Structure reports online 20091023 Pt 11
In the crystal structure of the title compound, C(20)H(16)O(5), the mol-ecule assumes an E configuration with the benzene ring and chromenecarboxyl group located on opposite ends of the C=C double bond. The chromene ring system and benzene ring are oriented at a dihedral angle of 74.66 (12)°. Weak inter-molecular C-H⋯O hydrogen bonding is present in the crystal structure. ...[more]