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New polydentate ligand namely bis(N-carboxylatoethyl)-0,0`-dipyridinium) L was synthesised
from the reaction of 0,0`-dipyridine with ethyl chloropropionate. Polymeric complexes of general
formulae [Cr2(L)(N3)0]Cl2.H2O, Na2[Ag2(L)(N3)0].H2O and [M2(L)(N3)0].nH2O, where (M=
Mn(II), Fe(II), Co(II), Ni(II), Cu(II), Zn(II) and Cd(II); (where n = 2;1;1;1;4;1 and 1, respectively))
are reported. The mode of bonding and overall geometry of the complexes were determined through
physico-chemical and spectroscopic methods. These studies revealed octahedral geometry
complexes. Molecular structure for the complexes has been optimised by CS Chem 3D Ultra
Molecular Modelling and Analysis Program and supported a six coordinate geometry.