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2,2'-[(4-Methyl-2-phenyl-imidazolidine-1,3-di-yl)bis-(methyl-ene)]diphenol.

ABSTRACT: The methyl-substituted imidazolidine ring of the title compound, C24H26N2O2, adopts an envelope conformation with the N atom adjacent to the methyl-ene group as the flap. The meth-yl-ethyl-ene fragment in this ring is disordered over two positions with an occupancy ratio of 0.899?(4):0.101?(4). The hy-droxy-benzyl groups are inclined at 71.57?(15) and 69.97?(19)° to the mean plane of major disorder component of the heterocyclic ring with an inter-planar angle between the two hy-droxy-benzyl groups of 66.00?(5)°. The phenyl substit-uent approaches a nearly perpendicular orientation relative to the mean plane of the imidazolidine ring, making a dihedral angle of 75.60?(12)°. This conformation is stabilized by two intra-molecular O-H?N bonds, which generate S(6) ring motifs.

SUBMITTER: Rivera A

PROVIDER: S-EPMC3793710 | biostudies-literature | 2013

REPOSITORIES: biostudies-literature

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2,2'-[(4-Methyl-2-phenyl-imidazolidine-1,3-di-yl)bis-(methyl-ene)]diphenol.

Rivera Augusto A Cárdenas Lorena L Ríos-Motta Jaime J Eigner Václav V Dušek Michal M

Acta crystallographica. Section E, Structure reports online 20130703 Pt 8

The methyl-substituted imidazolidine ring of the title compound, C24H26N2O2, adopts an envelope conformation with the N atom adjacent to the methyl-ene group as the flap. The meth-yl-ethyl-ene fragment in this ring is disordered over two positions with an occupancy ratio of 0.899 (4):0.101 (4). The hy-droxy-benzyl groups are inclined at 71.57 (15) and 69.97 (19)° to the mean plane of major disorder component of the heterocyclic ring with an inter-planar angle between the two hy-droxy-benzyl grou ...[more]

PMID: 24109297

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2,2'-{[2-(2-Chloro-phen-yl)-4-methyl-imidazolidine-1,3-di-yl]bis-(methyl-ene)}diphenol.

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2,2'-[Imidazolidine-1,3-diylbis(methyl-ene)]diphenol.

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Project description:The asymmetric unit of the title compound, C23H30N2O2, contains one half-mol-ecule, with a twofold axis splitting the mol-ecule in two identical halves. The structure of the racemic mixture has been reported previously [Rivera et al. (2009 ▶) J. Chem. Crystallogr. 39, 827-830] but the enanti-omer reported here crystallized in the ortho-rhom-bic space group P21212 (Z = 2), whereas the racemate occurs in the triclinic space group P-1 (Z = 2). The observed mol-ecular conformation is stabilized by two intra-molecular O-H⋯N hydrogen bonds, which generate rings with graph-set motif S(6). In the crystal, mol-ecules are linked via non-classical C-H⋯O inter-actions, which stack the mol-ecules along the b axis.

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4,4'-Di-tert-butyl-2,2'-[(3aRS,7aRS)-2,3,3a,4,5,6,7,7a-octa-hydro-1H-1,3-benzimidazole-1,3-di-yl)bis-(methyl-ene)]diphenol.

Project description:In the title compound, C(29)H(42)N(2)O(2), the heterocyclic ring has a twist conformation. The cyclohexane ring adopts a chair conformation. The dihedral angle between the aromatic rings is 32.74?(6)°. The mol-ecular conformation is stabilized by two intramolecular O-H?N hydrogen bonds with graph-set motif S(6). The crystal packing is stabilized by C-H?O and C-H?? inter-actions.

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Project description:The mol-ecule of the title Schiff base compound, C(28)H(32)N(2)O(2), has a twisted geometry, the dihedral angles between the central benzene ring and the other two benzene rings being 29.12?(14) and 26.01?(14)°. Four intra-molecular C-H?O hydrogen bonds and two intra-molecular O-H?N hydrogen bonds stabilize the mol-ecular structure. In the crystal packing, mol-ecules are stacked along the a axis and stabilized by ?-? inter-actions [centroid-centroid distance = 3.6724?(17)?Å]. The crystal studied was found to be a non-merohedral twin, the refined ratio of twin components being 0.374?(5):0.626?(5).

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