Inorganic Chemistry, Vol.40, No.19, 4818-4820, 2001
Thermal spin crossover in binuclear Iron(II) helicates: Negative cooperativity and a mixed spin state in solution
Comparison of the thermal spin crossover transition in solution of a Fe(II) dinuclear triple helicate with the analogous mononuclear complex shows that the helicate transition takes place over a wider temperature range in a two step process, implying negative cooperativity.