A series of inorganic aggregates composed of [MnV13O38]7− polyoxoanions and transition metal cations

In this paper, three new extended solid frameworks based on polyoxoanion [MnV13O38]7−: K0.5Na2.5Co2[MnV13O38]·22H2O (1), K1.5Na1.5Mn2[MnV13O38] 22H2O (2) and K0.5Na2.5Ni2[MnV13O38] 22H2O (3) have been synthesized and characterized by elemental analysis, IR spectrum, UV–Vis spectrum, thermal gravimetric analysis, magnetism, electrochemical analyses and single crystal X-ray diffraction. The structure analyses reveal that the polyoxoanions in compounds 1–3 are isostructural, which can be described as two transition metal-supported {M2(H2O)10(MnV13O38)} (M=Co2+, Mn2+ and Ni2+) units connected by a K+. And then the polyoxoanions are stacked by the electrostatic interactions with other K+ and Na+ cation to form a 2D layer. The variable-temperature magnetic susceptibility of compound 1 has been studied as the example, which shows an antiferromagnetic interaction.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► The polyoxoanions [MnV13O38]7− has been investigated scarcely. ► A series of [MnV13O38]7−-based extended frameworks have been reported. ► The compounds are the first TM supported [MnV13O38]7−-based materials.