The Crystal Structure of 1-(2-Thiazolylazo)-6-bromo-2-naphthol

Abstract

Abstract The crystals of 1-(2-thiazolylazo)-6-bromo-2-naphthol are orthorhombic, with a space group of P212121, and with unit-cell dimensions of a=19.044(3), b=31.996(9), c=4.221(1) Å, and z=8. The crystal structure was solved by the heavy-atom method and refined by the least-squares technique to give an R value of 0.064 for 1608 observed reflections. Both of the two crystallographically independent molecules show a generally similar shape and size. The phenolic oxygen atom is linked to the azo nitrogen atom adjacent to the thiazole ring by intramolecular hydrogen bonding, the O···N distances being 2.54 Å.