University of Oulu

Durrant, J., Tang, J., Mansikkamäki, A., Layfield, R. (2020) Enhanced single-molecule magnetism in dysprosium complexes of a pristine cyclobutadienyl ligand. Chemical Communications, 56 (34), 4708-4711. doi:10.1039/D0CC01722A

Enhanced single-molecule magnetism in dysprosium complexes of a pristine cyclobutadienyl ligand

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Author: Durrant, James P.1,2; Tang, Jinkui3; Mansikkamäki, Akseli4;
Organizations: 1Department of Chemistry, School of Life Sciences, University of Sussex, Brighton, UK
2School of Chemistry, The University of Manchester, Oxford Road, Manchester, UK
3Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Renmin Street 5626, 130022 Changchun, China
4NMR Research Unit, University of Oulu, P.O. Box 8000, Finland
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 2.4 MB)
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Language: English
Published: Royal Society of Chemistry, 2020
Publish Date: 2020-04-30


Intact transfer of the cyclobutadienyl ligand [C₄(SiMe₃)₄]2− to yttrium and dysprosium (M) produces the half-sandwich complexes [M{η⁴-C₄(SiMe₃)₄}(BH₄)₂(THF)]− as coordination polymers with bridging sodium or potassium ions. The dysprosium versions are single-molecule magnets (SMMs) with energy barriers of 371(7) and 357(4) cm−1, respectively. The pristine cyclobutadienyl ligands provide a strong axial crystal field that enhances the SMM properties relative to related cyclopentadienyl compounds.

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Series: Chemical communications
ISSN: 1359-7345
ISSN-E: 1364-548X
ISSN-L: 1359-7345
Volume: 56
Issue: 34
Pages: 4708 - 4711
DOI: 10.1039/D0CC01722A
Type of Publication: A1 Journal article – refereed
Field of Science: 114 Physical sciences
116 Chemical sciences
Funding: For financial support, we thank the University of Sussex, the ERC (CoG 646740), the EPSRC (EP/M022064/1), the National Natural Science Foundation of China (Grants 21525103 and 21871247), the Magnus Ehrnrooth Foundation, the CSC-IT Center for Science in Finland, the Finnish Grid and Cloud Infrastructure (urn:nbn:fi:research-infras-2016072533), the University of Oulu (Kvantum Institute) and Prof. H. M. Tuononen (University of Jyväskylä) for computational resources. JT and RAL also thank the Royal Society for a Newton Advanced Fellowship (NA160075).
Copyright information: © The Authors 2020. This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence.