Encapsulation of a CrIII Single‐Ion Magnet within an FeII Spin‐Crossover Supramolecular Host. (19th September 2018)

• Record Type: Journal Article
• Authors: Darawsheh, Mohanad; Barrios, Leoní A.; Roubeau, Olivier; Teat, Simon J.; Aromí, Guillem
• Is Part Of: Angewandte Chemie. Volume 130:Number 41(2018)
• Page Start: 13697
• Page End: 13701
• Publication Date: 2018-09-19
• Subjects: Einzelionenmagneten -- Spin-Crossover -- Spintronische Funktionseinheiten -- Wirt-Gast-Chemie; Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.201807256
• Languages: English
• ISSNs: 0044-8249

Abstract

Abstract: Single functional molecules are regarded as future components of nanoscale spintronic devices. Supramolecular coordination chemistry provides unlimited resources to implement multiple functions to individual molecules. A novel coordination [Fe2 ] helicate exhibiting spin‐crossover is demonstrated to be ideally suited to encapsulate a [Cr(ox)3 ] 3− complex anion (ox=oxalate), unveiling for the first‐time single ion slow relaxation of the magnetization for this metal. A possibility of tuning the dynamics of this relaxation as well as the performance of the Cr III center as qubit arises from the observation that metastable high spin Fe II centers from the host can be generated by irradiation with green light at low temperature.