(E)-1-(4-Amino-phen-yl)-3-(2,4,5-trimeth-oxy-phen-yl)prop-2-en-1-one.

ABSTRACT: Mol-ecules of the title amino-chalcone, C(18)H(19)NO(4), are twisted, with a dihedral angle of 11.26?(6)° between the 4-amino-phenyl and 2,4,5-trimeth-oxy-phenyl rings. The conformations of the three meth-oxy groups with respect to the benzene ring are slightly different. Two meth-oxy groups are almost coplanar with the attached benzene ring [C-O-C-C torsion angles of -1.45?(19) and 1.5?(2)°], while the third is (-)-synclinal with the attached benzene ring [C-O-C-C = -81.36?(17)°]. In the crystal structure, mol-ecules are stacked into columns along the b axis and mol-ecules in adjacent columns are linked by N-H?O hydrogen bonds into V-shaped double columns. Weak ?-? inter-actions are also observed, with a centroid-centroid distance of 3.7532?(8)?Å.

SUBMITTER: Fun HK 

PROVIDER: S-EPMC3007376 | biostudies-literature | 2010 Jul

REPOSITORIES: biostudies-literature