Synthesis and Characterization of Some Transition Metal Complexes with New Schiff Base Ligand Derivative from Isatin.

Abstract

The New Schiff base ligand [(E)-3-[(Z)-3-(2- Hydroxy phenylimino)-1,5-dimethyl-2-phenyl-2,3-dihydro-
1H-pyrazol-4-ylimino]indolin-2-one](2HDMIA) was prepared. The prepared ligand was characterized by
melting point, IR and UV-Vis spectra. All preparation of complexes of the ions Co (II), Ni(II)and Cu(II)
were deduced according to the molar ratio depending on the Micro elemental Analysis (C.H.N.). However
,the ratio were 1:2 (M: L )for all ions. The prepared complexes were characterized using IR, UV-Vis
spectra, molar conductivity magnetic susceptibility and melting points measurements. The percentages of
the metals in the complexes were measured by flame atomic absorption technique. Micro elemental
Analysis (C.H.N.) were also found, the results are in agreement with the Calculated values. All the
complexes are quite stable and could be Stored for months without any appreciable change. According to
the results obtained by elemental and spectral analysis, an octahedral structure suggested for the
prepared complexes of the ions Co (II)and Ni(II) and square planer of the Cu(II) complex.
Keywords: Schiff base, Isatin, 4- amino antipyrine.