Synthesis, Characterization, Thermal, and Electrochemical Properties of Co(II) and Cu(II) Pseudohalide Complexes with 2-mercapto-3-phenyl-quinazolin-4(3H)-one and ethylendiamine or 1,10-phenanthroline as Ligands
摘要:
Several complexes of the type [M(L)(en or phen)(H2O)X] (1a-4a and 1b-4b); where M = Co(II) and Cu(II); L = 2-mercapto-3-phenyl-quinazolin-4(3H)-one; en = ethylenediamine, phen = 1,10-phenanthroline; X = N-3 and NCS- have been prepared and characterized. The complex formation occurred through both nitrogen and sulphur atom of the ligand L. Electronic spectra and magnetic moment values suggest octahedral geometry for all complexes. The thermal behavior of the complexes revealed that the phen complexes are thermally more stable than the en complexes. The electrochemical behavior of the Cu(II) complexes showed that phen complexes appeared at more positive potential than corresponding en complexes.