Crystal structure of 2-{(R)-[1-(4-bromo-phen-yl)eth-yl]imino-meth-yl}-4-(phenyl-diazen-yl)phenol, a chiral photochromic Schiff base.

ABSTRACT: The title chiral photochromic Schiff base compound, C21H18BrN3O, was synthesized from (R)-(+)-1-(4-bromo-phen-yl)ethyl-amine and the salicyl-aldehyde of an azo-benzene derivative. The mol-ecule corresponds to the phenol-imine tautomer, the C=N and N-C bond distances being 1.285?(3) and 1.470?(3)?Å, respectively. The diazenyl group adopts a trans form, with an N=N distance of 1.256?(3)?Å. The hy-droxy group is involved in intra-molecular O-H?N hydrogen bonding. In the crystal, C-H?? inter-actions consolidate the crystal packing of one-dimensional chains, which exhibits short inter-molecular Br?C contacts of 3.400?(3)?Å.

SUBMITTER: Moriwaki R 

PROVIDER: S-EPMC4645026 | biostudies-literature | 2015 Nov

REPOSITORIES: biostudies-literature