On formation and characterization of CU [II] -anthranilic acid anilide complexes: spectroscopic and thermogravimetric studies

ABSTRACT

New series of Cu[Il]-anthranilic acid anilide complexes has been prepared and characterized by the application of a number of different experimental techniques. Determination of stability constants potentiometrically and chemical composition by elemental analysis indicated the formation of 11 and 12 [Cu[2+]L] complexes according to the side chain X-substituents. Measurements of Spectroscopic [IR, electronic and EPR] and thermal [TGDTA] behaviour were carried out. The results of both electronic and EPR] 9 =2-09-2.11 and 11 = 2-24-2.25] spectra indicated that Cu[II] ions are present in a nearly square planar coordination with tetragonal symmetry. TG results of the studied examples of 11 and 12 Cu [II] - complexes showed, on the other hand, the presence of two types of lattice and/or coordinated water and/or ethanol molecules