Received 11 July 2013
aDepartamento de Química, Facultad de Ciencias, Universidad Nacional de Colombia, Sede Bogotá, Cra 30 No. 45-03, Bogotá, Código Postal 111321, Colombia, and bInstitute of Physics, Academy of Sciences of the Czech Republic v.v.i., Na Slovance 2, 182 21 Praha 8, Czech Republic
Correspondence e-mail: firstname.lastname@example.org
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-HN 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-HO 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-HO hydrogen bonds forming inversion dimers. These dimers are linked to the B molecules via O-HO hydrogen bonds forming double-layered slabs lying parallel to the bc plane.
For related structures, see: Rivera et al. (2012, 2013b,c). For the synthesis of the title compound, see: Rivera et al. (2013a). For reference bond-length data, see: Allen et al. (1987). For hydrogen-bond graph-set nomenclature, see: Bernstein et al. (1995). For Cremer-Pople ring-puckering parameters, see: Cremer & Pople (1975).
Data collection: CrysAlis PRO (Agilent, 2010); cell refinement: CrysAlis PRO; data reduction: CrysAlis PRO; program(s) used to solve structure: SUPERFLIP (Palatinus & Chapuis, 2007); program(s) used to refine structure: JANA2006 (Petrícek et al., 2006); molecular graphics: DIAMOND (Brandenburg & Putz, 2005); software used to prepare material for publication: JANA2006.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: SJ5345 ).
The authors acknowledge the Dirección de Investigaciones, Sede Bogotá (DIB), and the Praemium Academiae project of the Academy of Sciences of the Czech Republic.
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