Pressure effect investigations on spin-crossover coordination compounds

Abstract : The piezochromic properties of spin-crossover complexes have been recognized for a long time, with increasing pressure favouring the low spin state due to its smaller volume and therefore shifting the spin equilibrium towards higher temperatures and accelerating the relaxation at a given temperature. However, the interpretation and quantification of pressure-induced changes have been several times compromised by the relatively poor and incomplete spectral and structural information provided by the detection methods or due to the experimental difficulties related to the need for hydrostatic conditions at low temperatures. The present review is therefore primarily focused on these experimental aspects of high-pressure spin crossover research providing an overview of methods of pressure generation and associated detection methods as well as on selected recent results.
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Ana Gaspar, Gabor Molnar, Aurelian Rotaru, Helena Shepherd. Pressure effect investigations on spin-crossover coordination compounds. Comptes Rendus Chimie, Elsevier Masson, 2018, 21 (12), pp.1095-1120. ⟨10.1016/j.crci.2018.07.010⟩. ⟨hal-02335949⟩

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