ON/OFF Photo(switching) along with Reversible Spin-State Change and Single-Crystal-to-Single-Crystal Transformation in a Mixed-Valence Fe(II)Fe(III) Molecular System

Kamilya, S and Mehta, S and Semwal, M and Lescouëzec, R and Li, Y and Pechousek, J and Reddy, VR and Rivière, E and Rouzières, M and Mondal, A (2022) ON/OFF Photo(switching) along with Reversible Spin-State Change and Single-Crystal-to-Single-Crystal Transformation in a Mixed-Valence Fe(II)Fe(III) Molecular System. In: Inorganic Chemistry .

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Abstract

A mixed-valence Fe(II)Fe(III) molecular system, Fe(pzTp)(CN)32Fe(bik)22·Fe(pzTp)(CN)32·4MeOH (1·4MeOH) (bik = bis-(1-methylimidazolyl)-2-methanone, pzTp = tetrakis(pyrazolyl)borate), exhibits single-crystal-to-single-crystal (SC-SC) transformation while increasing the temperature and is converted into {Fe(pzTp)(CN)32Fe(bik)22}·Fe(pzTp)(CN)32 (1). Both complexes exhibit thermo-induced spin-state switching behavior along with reversible SC-SC transformation, where the low-temperature FeIIILSFeIILS2 phase transforms into a high-temperature FeIIILSFeIIHS2 phase. 1·4MeOH exhibits an abrupt spin-state switching with T1/2 at 355 K, whereas 1 undergoes a gradual and reversible spin-state switching with a lower T1/2 at 338 K. Astonishingly, 1 exhibits ON/OFF photo-induced spin-state switching with TLIESST = 67 K, whereas 1·4MeOH does not show such an effect. © 2023 American Chemical Society.

Item Type:	Journal Article
Publication:	Inorganic Chemistry
Publisher:	American Chemical Society
Additional Information:	The copyright for this article belongs to American Chemical Society.
Department/Centre:	Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited:	17 Mar 2023 09:56
Last Modified:	17 Mar 2023 09:56
URI:	https://eprints.iisc.ac.in/id/eprint/81035

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