Heat capacity and phase transition of the mixed-valence compound, hexakis(acetato)oxotris(pyridine)triiron chloroform solvate

The heat capacity of the mixed-valence complex [Fe 3 O(O 2 CCH 3 ) 6 (py) 3 ](CHCl 3 ), where py is pyridine, has been measured with an adiabatic calorimeter between 14 and 300 K. A phase transition with two peaks closely centered at 207.14 and 208.19 K has been found