Acta Crystallographica Section E

Structure Reports Online

Volume 69, Part 8 (August 2013)


organic compounds



sj5345 scheme

Acta Cryst. (2013). E69, o1295-o1296    [ doi:10.1107/S1600536813019417 ]

2,2'-{[2-(2-Hydroxyphenyl)-4-methylimidazolidine-1,3-diyl]bis(methylene)}diphenol

A. Rivera, L. Cárdenas, J. Ríos-Motta, M. Kuceráková and M. Dusek

Abstract: The asymmetric unit in the title compound, C24H26N2O3, comprises two independent molecules (A and B). In molecule A, the central 2-hydroxyphenyl ring is inclined to the mean plane of the major component of the imidazolidine ring by 84.52 (14)°, and by 68.08 (9) and 47.48 (9)° to the outer phenol rings. The later are inclined to one another by 66.76 (9)° and by 78.12 (14) and 80.20 (14)° to the imidazoline ring mean plane. In molecule B, the central 2-hydroxyphenyl ring is inclined to the mean plane of the imidazolidine ring by 73.64 (10)°, and by 75.60 (8) and 38.32 (9)° to the outer phenol rings. The later are inclined to one another by 69.47 (9)° and by 82.60 (10) and 64.26 (10)° to the imidazolidine ring mean plane. In each of the independent molecules, two intramolecular O-H...N hydrogen bond form S(6) ring motifs. In disordered molecule A, the O-H groups of the 2-hydroxybenzyl groups are also involved in intramolecular O-H...O hydrogen bonds, with the O atom of the hydroxyphenyl group acting as the acceptor. In the crystal, A molecules are linked by pairs of O-H...O hydrogen bonds forming inversion dimers. These dimers are linked to the B molecules via O-H...O hydrogen bonds forming double-layered slabs lying parallel to the bc plane.


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