2-{(1E)-[(E)-2-(2,6-Di-chloro-benzyl-idene)hydrazin-1-yl-idene]meth-yl}phenol: crystal structure, Hirshfeld surface analysis and computational study.

ABSTRACT: The title Schiff base compound, C14H10Cl2N2O, features an E configuration about each of the C=N imine bonds. Overall, the mol-ecule is approximately planar with the dihedral angle between the central C2N2 residue (r.m.s. deviation = 0.0371?Å) and the peripheral hy-droxy-benzene and chloro-benzene rings being 4.9?(3) and 7.5?(3)°, respectively. Nevertheless, a small twist is evident about the central N-N bond [the C-N-N-C torsion angle = -172.7?(2)°]. An intra-molecular hy-droxy-O-H?N(imine) hydrogen bond closes an S(6) loop. In the crystal, ?-? stacking inter-actions between hy-droxy- and chloro-benzene rings [inter-centroid separation = 3.6939?(13)?Å] lead to a helical supra-molecular chain propagating along the b-axis direction; the chains pack without directional inter-actions between them. The calculated Hirshfeld surfaces point to the importance of H?H and Cl?H/H?Cl contacts to the overall surface, each contributing approximately 29% of all contacts. However, of these only Cl?H contacts occur at separations less than the sum of the van der Waals radii. The aforementioned ?-? stacking inter-actions contribute 12.0% to the overall surface contacts. The calculation of the inter-action energies in the crystal indicates significant contributions from the dispersion term.

SUBMITTER: Manawar RB 

PROVIDER: S-EPMC6775727 | biostudies-literature | 2019 Oct

REPOSITORIES: biostudies-literature