A water-soluble and water-coordinated Mn(ii) complex: synthesis, characterization and phantom MRI image study†‡
Abstract
Ligand H4bedik was reacted with MnCl2·4H2O at pH ∼ 6.5 to give a highly water-soluble and water-coordinated Mn(II) complex (1). The complex was found to show r1 = 3.11 mM−1 s−1 per Mn(II) at 1.4 T and 6.26 mM−1 s−1 per Mn(II) at 14.1 T at 25 °C, pH = 7.4. In addition to r1, the r2 at 14.1 T was found to be 132.78 mM−1 s−1 per Mn(II) at 25 °C, pH = 7.4.