Jornet-Mollá, Verónica and Giménez-Saiz, Carlos and Yufit, Dmitry S. and Howard, Judith A. K. and Romero, Francisco M. (2021) 'A reversible hydrogen‐bond isomerization triggered by an abrupt spin crossover near room temperature.', Chemistry - a European journal., 27 (2). pp. 740-750.
Abstract
The spin crossover salt [Fe(bpp) 2 ](isonicNO) 2 ·2.4H 2 O ( 1 ·2.4H 2 O) (bpp = 2,6‐bis(pyrazol‐3‐yl)pyridine; isonicNO = isonicotinate N‐oxide anion) exhibits a very abrupt spin crossover at T 1 /2 = 274.4 K. This triggers a supramolecular linkage (H‐bond) isomerization that responds reversibly towards light irradiation or temperature change. Isotopic effects in the thermomagnetic behaviour reveal the importance of hydrogen bonds in defining the magnetic state. Further, the title compound can be reversibly dehydrated to afford 1 , a material that also exhibits spin crossover coupled to H‐bond isomerization, leading to strong kinetic effects in the thermomagnetic properties.
| Item Type: | Article |
|---|---|
| Full text: | (AM) Accepted Manuscript Download PDF (5279Kb) |
| Status: | Peer-reviewed |
| Publisher Web site: | https://doi.org/10.1002/chem.202003654 |
| Publisher statement: | This is the peer reviewed version of the following article: Jornet-Mollá, Verónica, Giménez-Saiz, Carlos, Yufit, Dmitry S., Howard, Judith A. K. & Romero, Francisco M. (2021). A reversible hydrogen‐bond isomerization triggered by an abrupt spin crossover near room temperature. Chemistry - A European Journal 27(2): 740-750., which has been published in final form at https://doi.org/10.1002/chem.202003654. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. |
| Date accepted: | 17 August 2020 |
| Date deposited: | 25 August 2020 |
| Date of first online publication: | 27 November 2020 |
| Date first made open access: | 27 November 2021 |
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