A novel 2D coordination polymer based on triangular-shaped [Mn3O] units bridged by sodium ions and benzene-1,2,4,5-tetracarboxylate

On the basis of triangular-shaped [Mn3O] secondary building units, a novel two-dimensional (2D) manganese(III) complex, [NaMnIII3O(sao)3(btec)0.5(H2O)3]·1.25H2O (1) (H2sao = salicylaldoxime, H4btec = benzene-1,2,4,5-tetracarboxylate acid), was synthesized and structurally characterized. The structure of 1 consists of 2D coordination polymer based on [Mn3O] units bridged by sodium ions and benzene-1,2,4,5-tetracarboxylate groups. Magnetic data analysis shows that antiferromagnetic couplings exist between the manganese(III) ions in [Mn3O] subunit of complex 1.

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► Using Na+ ion bridges its adjacent [Mn3O] units to 1D zigzag chain along b-axis.
► The 1D array is connected by btec4− ligands to a 2D network.
► Antiferromagnetic couplings exist between the manganese(III) ions in [Mn3O] unit.