Encapsulation of a Cr III Single‐Ion Magnet within an Fe II Spin‐Crossover Supramolecular Host

Darawsheh, Mohanad; Barrios, Leoní A.; Roubeau, Olivier; Teat, Simon J.; Aromí, Guillem

doi:10.1002/ange.201807256

Title: Encapsulation of a Cr ^III Single‐Ion Magnet within an Fe ^II Spin‐Crossover Supramolecular Host

Journal Article · 18 September 2018 · Angewandte Chemie

DOI: https://doi.org/10.1002/ange.201807256 · OSTI ID:1472168

Darawsheh, Mohanad ^[1];

^[2];

^[3];

^[4];

^[2]

Departament de Química Inorgánica i Orgánica Universitat de Barcelona Diagonal 645 08038 Barcelona Spain
Departament de Química Inorgánica i Orgánica Universitat de Barcelona Diagonal 645 08038 Barcelona Spain, Institute of Nanoscience and Nanotechnology (IN2UB) Universitat de Barcelona Spain
Instituto de Ciencia de Materiales de Aragón (ICMA) CSIC and Universidad de Zaragoza Plaza San Francisco s/n 50009 Zaragoza Spain
Advanced Light Source Berkeley Laboratory Cyclotron Road Berkeley CA 94720 USA

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 [Fe ₂ ] 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.

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Sponsoring Organization:: USDOE

Grant/Contract Number:: AC02-05CH11231

OSTI ID:: 1472168

Journal Information:: Angewandte Chemie, Journal Name: Angewandte Chemie Journal Issue: 41 Vol. 130; ISSN 0044-8249

Publisher:: Wiley Blackwell (John Wiley & Sons)Copyright Statement

Country of Publication:: Germany

Language:: English

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