“…It is claimed that the planarity of the molecule in (III) is related to the shortness of the C4-C6 bond length (Au-Alvarez et al, 1999). The C4-C6 bond lengths are 1.477 (8), 1.473 (5) and 1.505 Å , while the dihedral angles between the planes of the benzene and thiazole rings are 14.8 (2), 6.2 (3) and 19.23 in (I), (III) and (IV), respectively.…”