(E )-Ethyl 3-(3,4-dihydroxyphenyl)prop-2-enoate: a natural polymorph extracted from Aristotelia chilensis (Maqui)

CRISTIAN PAZ; YANKO MORENO; JOSÉ BECERRA; MARIO SILVA; VIVIANA BURGOS; ELEONORA FREIRE; RICARDO BAGGIO

ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS

WILEY-BLACKWELL PUBLISHING, INC

Lugar: Londres; Año: 2013 vol. C69 p. 765 - 769

0108-2701

The natural title compound, C11H12O4, extracted from theChilean native tree Aristotelia chilensis (Maqui), is apolymorph of the synthetic E form reported by Xia, Hu &Rao [Acta Cryst. (2004), E60, o913?o914]. Both rotationalconformers are identical from a metrical point of view, andonly differ in the orientation of the 3,4-dihydroxyphenyl ringwith respect to the rest of the molecule, which leads tocompletely different crystal structure arrangements andpacking efficiencies. The reasons behind both reside in thedifferent hydrogen-bonding interactions.