Study of Some Novel Complexes of Ni(Ii) and Cu(Ii) with Schiff Base Ligand Derived from Hydroxamic ACID
Keywords:
Hydroxamic Acid, Chelating Ligand, Spectral Investigation, Magnetic Susceptibility, Molar Conductance, TridentateAbstract
In this paper, we report the synthesis and characterisation of some novel complexes of Ni(II) and Cu(II) with 2-(o-hydroxybenzophenoneimino) benzohydroxamic acid in presence of bases like ammonia, pyridine, phenyl isocyanide, quinoline and -picoline. The complexes have been characterised on the basis of elemental analyses, molar mass determination, molar conductance and magnetic susceptibility measurements, UV-visible and IR spectroscopic investigations. The complexes have been formulated as [M(L)(B)3] where,L=dideprotonated 2-(o-hydroxybenzophenone imino) benzohydroxamic acid (LH2), B=NH3, pyridine, phenyl isocyanide, quinoline and -picoline and M=Ni(II) and Cu(II). The ligand (L) behaves as dianionic tridentate ligand. The complexes have been found to be paramagnetic and non-electrolytic in nature. All the complexes are found to have octahedral geometry as indicated by the values of magnetic moments and the positions of u.v.-visible spectral bands. The nature of metal-ligand bonding has been established on the basis of IR spectral studies.
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