Crystals of C.I. Disperse Orange 29, a disazo dye, were grown from a m
ethanol solution and the X-ray structure was solved from 2484 independ
ent reflections to R = 0.0497. Results showed that the crystal examine
d exists in the triclinic space group PI. Interestingly, the structure
generated possessed a syn conformation, unlike 4-phenylazoazobenzene
which is known to exist in the anti conformation. (C) 1997 Elsevier Sc
ience Ltd.