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

• Published in: European journal of inorganic chemistry Vol. 2013; no. 5-6; pp. 992 - 1000
• Main Authors: Kaszub, Wawrzyniec, Buron-Le Cointe, Marylise, Lorenc, Maciej, Boillot, Marie-Laure, Servol, Marina, Tissot, Antoine, Guérin, Laurent, Cailleau, Hervé, Collet, Eric
• Format: Journal Article
• Language: English
• Published: Weinheim WILEY-VCH Verlag 01.02.2013; WILEY‐VCH Verlag; Wiley Subscription Services, Inc; Wiley-VCH Verlag
• Subjects: Chemical Sciences; Femto­second spectroscopy; Inorganic chemistry; Laser spectroscopy; Non-equilibrium processes; Phase transitions; Photocrystallography; Polymorphism; Spin crossover; Spin crossover; Laser spectroscopy; Photocrystallography; Phase transitions; Femto­second spectroscopy; Polymorphism; Non-equilibrium processes
• ISSN: 1434-1948; 1099-0682
• DOI: 10.1002/ejic.201201083

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. We use time‐resolved optical spectroscopy and X‐ray diffraction in the femtosecond to millisecond time window to investigate the photoswitching dynamics in the spin‐crossover compound [(TPA)Fe(TCC)]SbF6. The out‐of‐equilibrium processes are compared with spin‐crossover driven by temperature and pressure.