Coordination Compounds of Co(II), Ni(II) and Cu(II) with Thiosemicarbazone of a Series of Quinazolone Derivatives: Their Preparation, Characterization and Structural Investigation

Abstract

Complexes of Co(II), Ni(II) , and Cu(II) with 2-phenyl-[-3-
(hydroxyethyl)]-3,1-( 4H)-quinazoline-4-thiosemicarbazone (PHEQTSC),
2-phenyl-6,8-dibromo-[3-(hydroxy-ethyl)]-3,1-( 4H)-quinazoline-4-thiosemicarbazone
(PDBHEQTSC) and 2-phenyl-6-bromo-[3-(hydroxyethyl)]-3,1-
(4H)-quinazoline-4-thiosemicarbazone (PBHEQTSC) have been synthesized
and characterised on the basis of elemental analysis, IR, electronic
spectra, conductivity and magnetic moment data. The ligand can function
as a binegative tridentate chelating agent coordinating through nitrogen,
oxygen and sulphur atoms with the metal ions forming complexes in molar
ratio 2: 1 having the empirical formula [M{L^1-3}₂] and can be presumed
to have octahedral geometry.