Cadmium(II) Complexes of 1,2-Di(Imino- 4′-Antipyrinyl)Ethane
摘要:
Cadmium(II) complexes of the Schiff base 1,2-di(imino-4'-antipyrinyl)ethane (GA) having general formulae [Cd(GA)]X-2; (X = NO3- , ClO4-) and [Cd(GA)X-2]; (X = Cl- , Br- or I-) have been synthesized and characterized by elemental analysis, electrical conductance in non-aqueous solvents, infrared and electronic spectra as well as thermogravimetric analysis. In all these complexes, GA acts as a neutral tetradentate ligand coordinating through both the carbonyl oxygens and both the azomethine nitrogens. Both the anions are coordinated in the halide complexes while these remain as counter ions in the perchlorate and nitrate complexes. Thermal decomposition behavior of the nitrate complex indicates that it is stable up to 234 degrees C and undergoes a three-stage decomposition pattern yielding the anhydrous Cadmium(II) oxide as the final residue.