Thiazolylimines as novel ligand-systems for spin-crossover centred near room temperature

A new thiazolylimine ligand system for iron(II) complexes which stabilises spin-crossover in solution and solid states with T1/2 temperatures around room temperature has been developed. This effect is studied in solution and solid states. Furthermore crystal packing effects are investigated offering a variety of T1/2 and even hysteresis centred at −3 °C in the solid state.