Synthesis, Characterisation and Thermal studies of polymeric Cu(II), Zn(II) and Cd(II) complexes with 4-{(E)-1-(pyrimidin-2-ylimino)ethyl}-6- ((z)-1-(pyrimidin-2-ylimino)ethyl)benzene-1,3-diol and 4-{(E)-1-(p- tolylimino)ethyl}-6-((z)-1-(p-tolylimino)ethyl)benzene-1,3-diol

Polymeric copper(II), zinc(II) and cadmium(II) complexes of polydentate ligand 1,5-bis(2- pyrimidineaminoethylidene)-2,4-dihydroxy benzene (H2bispdb) and 1,5-bis(p-tolylaminoethylidene)-2,4- dihydroxy benzene (H2bistdb) of compositions (CuL(H2O)2)n and (ML)n, (M= Zn II or Cd II and H2L= H2bispdb or H2bistdb) were synthesised and characterised by analytical results, magnetic susceptibility, 1 HNMR, IR and electronic absorption studies. The thermal stability of zinc(II) and copper(II) complexes were studied and discussed.