COORDINATION TRENDS OF 6-AMINO-4-HYDROXY-2-MERCAPTOPYRIMIDINE TOWARDS CO (II), NI (II) AND CU (II) IONS

Abstract

Co(II), Ni(II), and Cu(II) complexes of 6-amino-4-hydroxy-2-mercaptopyrimidine have been prepared and characterized by several physiochemical tools; in terms, CHNS elemental analyses, infrared, electronic, mass, and proton nuclear magnetic resonance spectroscopy and molar conductivity measurements. The CHNS elemental analysis data showed the formation of 1:1 [M:L] ratio. The infrared spectral data exhibited the complexation behavior of the ligand towards to metal ions which is through -NH₂, -SH and -CN groups. The electronic spectra displayed the existence of π→π* and n→π* transitions. The mass spectral data revealed the possible fragmentations of the ligand. The proton nuclear magnetic resonance data of the ligand showed the position of the groups which enter in coordination. The molar conductivity measurements showed that all complexes are non-electrolyte.