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Errulat, D., Gabidullin, B., Mansikkamäki, A., Murugesu, M. (2020) Two heads are better than one : improving magnetic relaxation in the dysprosium metallocene DyCp*₂BPh₄ upon dimerization by use of an exceptionally weakly-coordinating anion. Chemical Communications,56 (44), 5937-5940. https://doi.org/10.1039/D0CC01980A

Two heads are better than one : improving magnetic relaxation in the dysprosium metallocene DyCp*₂BPh₄ upon dimerization by use of an exceptionally weakly-coordinating anion

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Author: Errulat, Dylan1; Gabidullin, Bulat2; Mansikkamäki, Akseli3;
Organizations: 1Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, ON K1N 6N5, Canada
2Canadian Light Source Inc., Saskatoon, Canada
3NMR Research Unit, University of Oulu, P. O. Box 3000, 90014 Oulu, Finland
Format: article
Version: accepted version
Access: embargoed
Persistent link: http://urn.fi/urn:nbn:fi-fe2020060440638
Language: English
Published: Royal Society of Chemistry, 2020
Publish Date: 2021-04-16
Description:

Abstract

Partial metathesis between two weakly-coordinating anions in the archetypical dysprosium metallocene DyCp*₂BPh₄ results in the first example of [BPh₄]⁻ as a bridging ligand in 4f metals, with a unique η₂,η₂:η₂,η₂-bridge. Magnetic susceptibility and relaxation dynamics studies along with ab initio calculations reveal improved slow relaxation of the magnetization in [Dy₂Cp*₄(μ-BPh₄)][Al(OC(CF₃)₃)₄] over its mononuclear congener, resulting in an energy barrier of 490 K/340 cm⁻¹ and waist-restricted hysteresis up to 6.5 K.

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Series: Chemical communications
ISSN: 1359-7345
ISSN-E: 1364-548X
ISSN-L: 1359-7345
Volume: 56
Pages: 5937 - 5940
DOI: 10.1039/D0CC01980A
OADOI: https://oadoi.org/10.1039/D0CC01980A
Type of Publication: A1 Journal article – refereed
Field of Science: 114 Physical sciences
116 Chemical sciences
Subjects:
Article
Funding: We are grateful to the University of Ottawa, Natural Sciences and Engineering Research Council of Canada, Canada Foundation for Innovation, the Magnus Ehrnrooth Foundation as well as the University of Oulu (Kvantum Institute) for the funding of this work.
Dataset Reference: Electronic supplementary information (ESI) available. CCDC 1979114. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/d0cc01980a
  https://doi.org/10.1039/D0CC01980A
Copyright information: © 2020 The Authors. Publishing rights The Royal Society of Chemistry.