Design of Tri‐Substituted Dodecatungstosilicate from a Trilacunary Silicotungstate by Insertion of Manganese Ions of [Mn3(μ3‐O)(2‐Cl‐benzoato)6(py)3]: Synthesis, Structure, Redox and Magnetic Studies

Abstract

AbstractA mixed‐valent manganese tricapped Keggin polyoxometalate (3) has been designed by insertion of three Mn atoms from [MnIIMnIII2(μ3‐O)(2‐Cl‐benzoato)6(py)3] (1) into the vacant sites of the trilacunary precursor Na10[A‐α‐SiW9O34] (2). This compound exhibits strong antiferromagnetic interaction between the spin carriers of the Mn mixed‐valent trinuclear moiety, which suggests an S = 5/2 ground state.