Synthesis and characterization of Mn(II), Co(II), Ni(II) and Cu(II) complexes with Schiff bases derived from terephthalaldehyde and isophthalaldehyde

A series of new complexes of the type [M2LCl4] and [M2L2Cl4] where M=Mn(II), Co(II), Ni(II) and Cu(II), L=L1 or L2 {L1= 1,4-Bis (3-amino-1,2,4-triazole) terephthylidene, L2=1,3-Bis (2-amino pyrimidine) isophthylidene} have been prepared in 1:2 and 2:2 (L:M) molar ratio and characterized by molar conductance, magnetic moment, FT-IR,1H-NMR, Uv-visble spectra studies and metal content analysis. Conductivity data in DMF and DMSO solution showed that all complexes are non-electrolyte. Magnetic moment and electronic spectra indicate that some of the complexes have a tetrahedral and the others have an octahedral environment