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Abstract
New tellurito complexes, [Co(en)2TeO3]Cl.2H2O, [Co(1.2-pn)TeO3]Cl. 7H2O. [Co(en)(1.2-pn)TeO3]Cl. 5H2O. and [Co(en)2(NH3)(TeO3)½]Br2. ½KBr. 1 ½H2O where; en = ethylenediamine. pn = propylenediamine were synthesized. Infrared spectra of the tellurito complexes indicate that the tellurite ligand is coordinated exclusively through two of its oxygen atoms, i.e., in a bidentate form. Visible spectra and magnetic moments of the complexes show that they are low-spin and hexacoordinated. The molar conductances, γM, of these complexes in water show that the complexes are completely ionized.