title: (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 π-π inter-actions are also observed, with a centroid-centroid distance of 3.7532 (8) Å.
authors: Hoong-Kun
authors: HK
authors: Fun
authors: Thawanrat
authors: T
authors: Kobkeatthawin
authors: Pumsak
authors: P
authors: Ruanwas
authors: Suchada
authors: S
authors: Chantrapromma
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