What question did this study set out to answer?

To elucidate the nature and mechanisms of intermediate phases during pressure-induced versus temperature-induced first-order spin transitions in Hoffmann-like coordination compounds.

September 8, 2022Inorganic Chemistry

Pressure-Induced Mixed States Caused by Spin-Elastic Interactions during First-Order Spin Phase Transition in Spin Crossover Compounds

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Authors

RLRuixin LiJilin University ВКВ. М. КалітаNational Academy of Sciences of Ukraine HFHennadii Fylymonov

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Implication

Spectroscopic analysis reveals pressure-induced mixed spin states in Hoffmann-like coordination frameworks, indicating that elastic compressibility differences drive gradual transition hysteresis.

Key Points

To elucidate the nature and mechanisms of intermediate phases during pressure-induced versus temperature-induced first-order spin transitions in Hoffmann-like coordination compounds.
Conducted magnetic measurements and Raman spectroscopy on Hoffmann-like complexes [Fe(Fpz)2M(CN)4] (M = Pt, Pd) under variable pressure and temperature conditions.
Applied a thermodynamic model incorporating spin-elastic interactions and spin-state-dependent compressibility.
Pressure-induced spin transition yielded a non-abrupt hysteretic transition featuring a mixed intermediate state of high-spin and low-spin configurations.
Temperature-induced spin transition at ambient pressure produced an abrupt, homogeneous phase switch accompanied by thermal hysteresis.
Thermodynamic modeling demonstrated that the sloped hysteresis loop under pressure stems from internal pressure generated by compressibility differences between the high-spin and low-spin phases.

Cite This Study

Li et al. (2022) studied this question.

synapsesocial.com/papers/6a956d4966ca20f6f97d0a5b https://doi.org/10.1021/acs.inorgchem.2c02124

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Implication

Spectroscopic analysis reveals pressure-induced mixed spin states in Hoffmann-like coordination frameworks, indicating that elastic compressibility differences drive gradual transition hysteresis.

Pressure-Induced Mixed States Caused by Spin-Elastic Interactions during First-Order Spin Phase Transition in Spin Crossover Compounds

Discussion

Member takes

Implication

Key Points

Cite This Study

Pressure-Induced Mixed States Caused by Spin-Elastic Interactions during First-Order Spin Phase Transition in Spin Crossover Compounds

Discussion

Member takes

Implication

Key Points

Cite This Study

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