The spin 32 state (?) in six-coordinate iron (III). A Mössbauer and EPR investigation

Spin Crossover in a Tetranuclear Cr(III)−Fe(III)3 Complex

“…The binuclear complex [{Fe III ( 5 L)} 2 (4,4‘-bipy)] 2+ bridged by the 4,4‘-bipyridine exhibits spin crossover as well crossing the room temperature region . The manifoldness of the spin crossover in Fe III complexes with low-symmetry coordination sphere is that besides S = 1 / 2 to 5 / 2 also 1 / 2 to 3 / 2 and 3 / 2 to 5 / 2 spin transitions were observed . The saldpt ligand itself is a promising candidate of stabilizing a great variety of spin states, depending upon the coligand in the closing position of the coordination sphere and the counterions in the solid state.…”