Fe(III) salEen derived Schiff base complexes as potential contrast agents

Three new Fe(III) compounds of general formula [Fe(R-salEen)2]Cl (R = H, 1; 5-Br, 2; 3-OMe, 3) have been synthesised. The relaxivities for 2 are in agreement with those known for other iron(III) contrast agents and showed low toxic effects, thus making these good candidates for MRI contrast agents.