Spin-State Photoswitching Dynamics of the [(TPA)Fe(TCC)]SbF6 Complex

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Abstract

We report on the spin state photoswitching dynamics triggered by a femtosecond laser of [(TPA)FeIII(TCC)]+ cations in a new salt with SbF6 anions. Femtosecond optical pump-probe spectroscopy and picosecond X-ray diffraction techniques were combined to investigate the different steps of the out-of-equilibrium dynamics. The obtained results are very consistent with the ones previously reported for the PF6 salts. If the ultra-fast responses of the cations in both salts are similar, the spin conversion due to laser heating is slightly shifted to higher temperature in the SbF6 salt, as its thermal crossover occurs at higher temperature.

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