A monoclinic polymorph of 1-(4-chloro-phen-yl)-3-(4-methoxy-phen-yl)prop-2-en-1-one.

ABSTRACT: The crystal structure of the title compound, C(16)H(13)ClO(2) (II), (space group P2(1)/c,) is a polymorph of the structure, (I), reported by Harrison, Yathirajan, Sarojini, Narayana & Indira [Acta Cryst. (2006), E62, o1647-o1649] in the ortho-rhom-bic space group Pna2(1). The dihedral angle between the mean planes of the 4-chloro- and 4-meth-oxy-substituted benzene rings is 52.9?(1)° in (II) compared to 21.82?(6)° for polymorph (I). The dihedral angles between the mean planes of the prop-2-en-1-one group and those of the 4-chloro-phenyl and 4-methoxy-phenyl rings are 23.3?(3) and 33.7?(1)°, respectively. in (II). The corresponding values are 17.7?(1) and 6.0?(3)°, respectively, in polymorph (I). In the crystal, weak C-H?? inter-actions are observed.

SUBMITTER: Jasinski JP 

PROVIDER: S-EPMC2979778 | biostudies-literature | 2010 Jan

REPOSITORIES: biostudies-literature