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.