One-dimensional Fe(II) chains with 1,2,4-triazole as bridging ligands present the LIESST
effect; i.e. their spin state switched from low-spin to high-spin after light irradiation at low temperature.
This account summarizes the findings in this area of photomagnetism where 57Fe Mössbauer
spectroscopy was used as a primary detection tool of the LIESST effect.
Keywords: 1D chains, iron, LIESST effect, metastable state, photomagnetism, spin crossover.
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