Synthesis, structure, spectroscopic and magnetic characterization of a novel spin-crossover iron(II) complex with 1-cyclopropyltetrazole ligands

An abrupt spin transition behaviour (T1/2 = 180 K) in an Fe(II) complex based on 1-cyclopropyltetrazol ligands is presented. The magnetic data are supported by several independent physico-chemical methods such as 57Fe-Mössbauer, UV-VIS-NIR, MIR and FIR spectroscopy.