Der Pharma Chemica
Journal for Medicinal Chemistry, Pharmaceutical Chemistry, Pharmaceutical Sciences and Computational Chemistry


Synthesis and Spectroscopic Studies of Novel Transition Metal Complexes with 5-Phenyl-2-[2-Hydroxy pyridylacethydrazide]-1,3,4-Oxadiazole

Author(s): Adil A Awad

A new Schiff base 5-Phenyl-2-[2-hydroxy benzylhydrizido]-1,2,4-oxadiazole (HL) and its complexes with (Cr(III), Mn (II), Ni (II), Co(II) and Cu (II) were synthesized. The ligand was prepared in two steps, in the first step a solution of 2- mercapto -5-phenyl-1,3,4–oxadiazole in methanol reacts with 98% hydrated hydrazine under reflux to give an intermediate compound 2-hydrazion-5-phenyl-1,3,4-oxadiazole which reacts in the second step with o-hydroxybenzaldehyde to give the mentioned ligand (HL). The complexes were synthesized by addition the corresponding metal chloride solution to solution of ligand in methanol under reflux (1:2) metal to ligand ratio. On the basis of molar conductance, magnetic susceptibility, I.R, UV–visible spectra and elemental analysis (C.H.N) the complexes may be formulated as [CrL2(H2O2]Cl and [ML2], where M: (Mn(II), Co(II), Ni(II) and Cu(II). The data suggested an octahedral geometry for Cr(III) complex and a square planar for Co(II), Ni(II) and Cu(II), while the Mn(II) complex was tetrahedral.


bornova escort karşıyaka escort osmangazi escort buca escort anne porno fetiş porno anal porno bartın escort burdur escort eskişehir escort escort izmir bursa escort porno escort bayan