Ontology highlight
ABSTRACT:
SUBMITTER: Huang L
PROVIDER: S-EPMC3344467 | biostudies-literature | 2012 May
REPOSITORIES: biostudies-literature
Acta crystallographica. Section E, Structure reports online 20120406 Pt 5
In the title compound, C(18)H(15)NO(4), the benzene rings form quite different dihedral angles [16.07 (1) and 59.50 (1)°] with the central pyrrole ring, indicating a twisted mol-ecule. Conjugation is indicated between the five- and six-membered rings by the lengths of the C-C bonds which link them [1.462 (3) and 1.477 (3) Å]. The most prominent feature of the crystal packing is the formation of inversion dimers via eight-membered {⋯HNCO}(2) synthons. ...[more]