Synthesis, characterization, and antioxidative activity of vitamin B6 rare earth (III) complexes

A series of vitamin B6 pyridoxol rare earth (III) complexes Re(PN)5Cl3. 6H2O (PN = pyridoxol; Re = La, Ce, Pr, Nd, Sm, Eu, Gd, Ho, Er, Y) were synthesized and characterized by elemental analysis, molar conductance, TGA-DTA, IR, and 1HNMR spectroscopic techniques. The antioxidative activity of complexes was determined, using the suppression ratio of activated oxygen as an indicator. The results show that the complexes have the scavenger effects for activated oxygen.