Document Type : Research Paper
Author
Anbar University - College of Education for Pure Sciences
Abstract
The reaction between 3,3-,4,4– tetraaminobiphenyl and o-hydroxy
benzaldehyde in 1:4 molar ratio affords a novel tetrabasic octadentate Schiff
base (Fig(1) ) . Its reaction with Ni(OAc)2 in 1:2 molar ratio. Leads to the
formation of dinuclear complexes of the general formula [Ni2L] and the latter.
reacts with the metal halide MX2 ( M= , Ni, Cu, X=Cl or Br ) in 1:2 molar ratio
to form tetranuclear complexes of the general formula [ Ni2LM2X4], M=Ni,Cu .
The coordination of the Schiff base in the dinuclear complexes seems to occur via
N- azomethine and the deprotonated OH groups , while the further coordination
in the tetranuclear complexes seems to take place via the lone pair of electrons
available on the oxygen atoms . The structural features of the chelates have been
confirmed by elemental analysis , IR ,Uv –vis and magnetic measurement .The
compounds have been prepared at the room lab Temperature.
Main Subjects
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