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Crystal structure of 4-({5-[(E)-(3,5-di-fluoro-phen-yl)diazen-yl]-2-hy-droxy-benzyl-idene}amino)-2,2,6,6-tetra-methyl-piperidin-1-ox-yl.


ABSTRACT: The asymmetric unit of the title compound, C22H25F2N4O2, contains two crystallographically independent mol-ecules. In one mol-ecule, the two benzene rings are oriented at a dihedral angle of 1.93?(10)° and in the other mol-ecule the corresponding dihedral angle is 7.19?(9)°. The piperidine rings in the two mol-ecules adopt a similar distorted chair conformation, and both have pseudo-mirror planes passing through the N-O bonds. An intra-molecular O-H?N hydrogen bond between the hy-droxy group and the imine N atom is observed in both mol-ecules. In the crystal, weak C-H?O and C-H?F hydrogen bonds, enclosing R 2 (2)(6) ring motifs, and weak ?-? stacking inter-actions link the mol-ecules into a three-dimensional supra-molecular network, with centroid-to-centroid distances between the nearly parallel phenyl and benzene rings of adjacent mol-ecules of 3.975?(2) and 3.782?(2)?Å.

SUBMITTER: Tats?z R 

PROVIDER: S-EPMC4518987 | BioStudies | 2015-01-01T00:00:00Z

REPOSITORIES: biostudies

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