We compare the macroscopic and magnetic properties of three spin crossover compounds, [FeII(2-pic)3]Cl2·EtOH, [FeII(2-pic)3]Cl2·2-PrOH and [FeII(2-pic)3]Cl2·(EtOH)0.744·(2-PrOH)0.256 (pic = picolylamine), with their crystal structures in high-spin, low-spin and photoexcited high-spin states. We show that the spin conversion process is affected not only by the presence of solvent molecules in the crystal structure, but also by their occupational disorder in the mixed ethanol–2-propanol solvate. The solvent mixture induces a new spin crossover scenario, in which intermediate ordering of spin states is suppressed, the transition temperature is shifted and cooperativity is reduced relative to the parent, pure ethanol and 2-propanol, solvates.
You have access to this article
Please wait while we load your content...
Something went wrong. Try again?