Hay, M. A., Sarkar, A., Marriott, K. E.R., Wilson, C. , Rajaraman, G. and Murrie, M. (2019) Investigation of the magnetic anisotropy in a series of trigonal bipyramidal Mn(II) complexes. Dalton Transactions, 48(41), pp. 15480-15486. (doi: 10.1039/C9DT02187F) (PMID:31282505)
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Abstract
Understanding how the magnetic anisotropy in simple coordination complexes can be manipulated is instrumental to the development of single-molecule magnets (SMMs). Clear strategies can then be designed to control both the axial and transverse contributions to the magnetic anisotropy in such compounds, and allow them to reach their full potential. Here we show a strategy for boosting the magnetic anisotropy in a series of trigonal bipyramidal Mn(II) complexes – [MnCl3(HDABCO)(DABCO)] (1), [MnCl3(MDABCO)2]·[ClO4] (2), and [MnCl3(H2O)(MDABCO)] (3). These have been successfully synthesised using the monodentate [DABCO] and [MDABCO]+ ligands. Through static (DC) magnetic measurements and detailed theoretical investigation using ab initio methods, the magnetic anisotropy of each system has been studied. The calculations reveal that the rhombic zero-field splitting (ZFS) term (E) can be tuned as the symmetry around the Mn(II) ion is changed. Furthermore, an in silico investigation reveals a strategy to increase the axial ZFS parameter (D) of trigonal bipyramidal Mn(II) by an order of magnitude.
Item Type: | Articles |
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Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Wilson, Dr Claire and Marriott, Miss Katie and Hay, Ms Moya Anne and Murrie, Professor Mark |
Authors: | Hay, M. A., Sarkar, A., Marriott, K. E.R., Wilson, C., Rajaraman, G., and Murrie, M. |
College/School: | College of Science and Engineering > School of Chemistry |
Journal Name: | Dalton Transactions |
Publisher: | Royal Society of Chemistry |
ISSN: | 1477-9226 |
ISSN (Online): | 1477-9234 |
Published Online: | 28 June 2019 |
Copyright Holders: | Copyright © 2019 The Authors |
First Published: | First published in Dalton Transactions 48(41):15480-15486 |
Publisher Policy: | Reproduced under a Creative Commons License |
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