Ontology highlight
ABSTRACT:
SUBMITTER: Chantrapromma S
PROVIDER: S-EPMC2968789 | biostudies-literature | 2009 Mar
REPOSITORIES: biostudies-literature
Acta crystallographica. Section E, Structure reports online 20090328 Pt 4
The mol-ecule of the title chalcone derivative, C(18)H(17)BrO(4), is twisted, the dihedral angle between the 4-bromo-phenyl and 2,4,6-trimethoxy-phenyl rings being 39.17 (6)°. The three meth-oxy groups are oriented in two different conformations whereby two meth-oxy groups are coplanar, whereas the third is twisted with respect to the attached benzene ring [C-O-C-C torsion angles of -2.84 (18), -2.80 (18) and -9.31 (18)°]. Weak intra-molecular C-H⋯O inter-actions generate two S(5) and one S(6) r ...[more]