New MCl3 (M = Y, Dy, Pr) Salicylato, Maleato, Phtalato, Phenylsufonato and Phosphato Complexes and Adducts: Synthesis and Infrared Study

Nine rare earth complexes have been synthesized from reaction carried in common organic solvent between salicylate, maleate, phtalate, phenylsulfonate or phosphate ammonium salt and MCl3 (M = Y, Dy, Pr). All compounds have been structurally characterized by infrared. Structures involving the complex anions have been proposed. The suggested structures are discrete or of double metallic components type. The oxyanions behave towards metallic centres as monodentate, monochelating or monochelating and monodentate ligands. The coordination number at rare earth metal atoms vary from five (5) for Pr and Dy to twelve (12) for Dy. For compounds containing a protonated amine, when the possible hydrogen bonding interactions are considered supramolecular architectures may be