Mn and Cu–Na coordination compounds containing the tetrazole-5-acetato anion (tza) ligands

Two novel coordination compounds [Mn(tza) · (H2O)2]n (1) and [CuNa2(tza)2 · (H2O)4]n (2) (tza = tetrazole-5-acetato) were synthesized by reaction of tetrazole-5-ethyl acetate with Mn(ClO4)2 · 6H2O and CuCl2 · 2H2O in sodium hydroxide solution, respectively. Compound 1 has a one-dimensional (1D) polymeric chain that are bridged by tza linker, while compound 2 has two crystallographically independent metal centers (Cu and Na), that are bridged by tza into a 2D layer structure. The magnetic susceptibility study of 1 demonstrates the presence of antiferromagnetic interaction between two adjacent Mn(II) ions.

The two new coordination compounds, [Mn(tza) · (H2O)2]n (1) and [CuNa2(tza)2 · (H2O)4]n (2) have been synthesized by the conventional aqueous solution synthesis. Compound 1 forming a 1D polymeric chain structure by tza bridging linker and compound 2 forming a 2D layer structure by tza seven-coordinated bridging ligand, which are further linked together via the hydrogen-bonding interactions to form 3D supramolecular framework.Figure optionsDownload as PowerPoint slide