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N-(4-Meth-oxy-benz-yl)phthalimide: a triclinic polymorph.

ABSTRACT: THE TITLE COMPOUND [SYSTEMATIC NAME: 2-(4-meth-oxy-benz-yl)-isoindoline-1,3-dione], C(16)H(13)NO(3), represents a triclinic polymorph of the previously reported monoclinic form [Warzecha et al. (2006 ▶). Acta Cryst. E62, o5450-o5452]. The reaction of potassium phthalimide and 4-meth-oxy-benzyl chloride in dimethyl-formamide gave platelet-shaped crystals; these were harvested and then needle-shaped crystals were deposited. The platelet- and needle-shaped crystals correspond to the triclinic and monoclinic forms, respectively. The N-C-C(ar)-C(ar) torsion angles between the ring systems are -82.66 (14) and 95.28 (13)°, resulting in a roof-shaped conformation. In the crystal, mol-ecules are accumulated by offset face-face π-π inter-actions between phthalimide units [centroid-centroid distances = 3.640 (2) and 3.651 (2) Å], with inter-planar distances of 3.321 (1) and 3.435 (1) Å. Weak inter-molecular C(ar-yl)-H⋯O=C and C(alk-yl)-H⋯O=C contacts form C(8) and C(11) infinite chain motifs, respectively.

SUBMITTER: Takahashi H

PROVIDER: S-EPMC3414914 | biostudies-literature |

REPOSITORIES: biostudies-literature

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