POM-assisted synthesis of the first cyclohexanediamine-based Salen-type MnIII-dimer complexes

The reaction between manganese nitrate and N,Nʹ-(±)-ethylene-bis(salicylicyclohexanediaminate) ((±)-salcy) in dilute lacunary polyoxoanion [PW9O34]9− solution led to isolation of a new Mn-dimer, [Mn((±)-salcy)(N3)]2 (1). Structural analysis indicates that 1 represents the first salcy-based Mn-dimer complex. Magnetic susceptibility studies reveal that 1 shows single-molecule magnet (SMM) behavior from 2 to 5 K.