A rare mixed-valence state manganese(II/IV) tetranuclear cage formed using phenyl 2-pyridyl ketone oxime and azide as ligands

摘要

The reaction of Mn(O_2CPh)_2 centre dot 2H_2O with the sodium salt of phenyl 2-pyridyl ketone oxime and sodium azide in MeOH gives a tetranuclear cage with a [Mn_3~(II)Mn~(IV)(mu_4-O)(eta~1,mu_2-N_3)]~(7+) core.Magnetic and EPR studies show the cage has an S=6 ground state.