Two aminobenzothiazole derivatives for Pd(II) and Zn(II) coordination: Synthesis, characterization and solid state fluorescence

Two derivatives of 2-aminobenzothiazole are reported: an imine potentially able to generate on deprotonation a mononegative ligand moiety and an amide suited to metal coordination. Both have been used for producing tetracoordinated complexes of zinc (II) and palladium (II). The thermodynamic and optical properties of ligands and complexes were analysed by calorimetry, polarizing microscopy and an X-ray technique. In particular, the fluorescence properties of ligands and complexes were explored.