Complexes of Zr (IV) with Schiff bases of 3-substituted-4-amino-5-mercapto-1,2,4-triazole and glyoxal/biacetyl/denzil have been synthesized in methanol and characterized by analytical and spectral data. They have 1:1 stochiometry. The IR observations suggest that, the Schiff bases have co-ordinated through azomethine nitrogen atoms. The PMR spectral observations support the IR inference. On the bases of this information, it is suggested that, Zr (IV) complexes exhibit coordination number of six.
