LAUSR

Abstract Seven new complexes based on 4-(3-carboxyl-1,2,4-1H-triazol-1-yl)benzoic acid (H 2 L), namely [Zn(L)(H 2 O) 2 ] n ( 1 ), [Cd(L)(H 2 O) 2 ] n ( 2 ), [Pb(HL) 2 ] n ( 3 ), [Pb(L)(H 2 O)] n ( 4 ), [Cu(L)(H 2 O) 2 ] n ( 5 ), [Co(L)(H 2 O) 2 ] n ( 6 ) and [Mn(L)(H 2 O) 2 ] n ( 7 ), were synthesized by employing different center metal ions and a imidazol-carboxyl bifunctional ligand (H 2 L) under hydro(solvo)thermal conditions. The L 2– /HL – ligand in 1-7 adopts different coordination modes and generates diverse 1D or 2D structures. The luminescent and magnetic properties of seven complexes were investigated in detail. Moreover, complex 1 shows high selectivity for Fe 3+ , Cr 2 O 7 2− and MnO 4 - ions, indicating that 1 can be an excellent candidate for luminescence sensing. In addition, complexes 5 , 6 and 7 demonstrate antiferromagnetic interactions.