Abstract
The title chiral photochromic Schiff base compound, C21H18BrN3O, was synthesized from (R)-(+)-1-(4-bromophenyl)ethylamine and the salicylaldehyde of an azobenzene derivative. The molecule 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 hydroxy group is involved in intramolecular O—H⋯N hydrogen bonding. In the crystal, C—H⋯π interactions consolidate the crystal packing of one-dimensional chains, which exhibits short intermolecular Br⋯C contacts of 3.400 (3) Å.
Highlights
The title chiral photochromic Schiff base compound, C21H18BrN3O, was synthesized from (R)-(+)-1-(4-bromophenyl)ethylamine and the salicylaldehyde of an azobenzene derivative
The molecule corresponds to the phenol–imine tautomer, the C N and N—C bond distances being 1.285 (3) and 1.470 (3) A, respectively
The hydroxy group is involved in intramolecular O—HÁ Á ÁN hydrogen bonding
Summary
The title chiral photochromic Schiff base compound, C21H18BrN3O, was synthesized from (R)-(+)-1-(4-bromophenyl)ethylamine and the salicylaldehyde of an azobenzene derivative. Crystal structure of 2-{(R)-[1-(4-bromophenyl)ethyl]iminomethyl}-4-(phenyldiazenyl)phenol, a chiral photochromic Schiff base Received 5 October 2015; accepted 21 October 2015 The molecule corresponds to the phenol–imine tautomer, the C N and N—C bond distances being 1.285 (3) and 1.470 (3) A , respectively.
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