Capel Berdiell, I orcid.org/0000-0003-3828-7097, Kulmaczewski, R orcid.org/0000-0002-3855-4530, Warriner, SL orcid.org/0000-0002-7589-6011 et al. (2 more authors) (2020) Iron and Silver Complexes of 4‐(Imidazol‐1‐yl)‐2,6‐di(pyrazol‐1‐yl)‐pyridine (L), Including a [Fe3(µ‐F)2F6L8]+ Assembly. European Journal of Inorganic Chemistry, 2020 (46). pp. 4334-4340. ISSN 1434-1948
Abstract
Treatment of 2,4,6‐trifluoropyridine with sodium imidazolate, then 2 equiv. sodium pyrazolate, in two reaction steps yields the title ligand L in 40 % overall yield. Crystalline [FeL2][BF4]2 and [FeL2][ClO4]2 are isostructural high‐spin complexes, with highly twisted six‐coordinate geometries and pendant imidazolyl groups. Conversely, [Ag(µ‐L)]BF4·0.5MeCN is a linear coordination polymer of distorted square planar silver ions linked by κ1:κ3,µ‐L ligands. Some samples of [FeL2][BF4]2 were contaminated by [FeIII3(µ‐F)2F6L8]BF4, which was prepared in pure form following reaction of Fe[BF4]2·6H2O, Na3[FeF6] and L in appropriate ratios. The linear [{trans‐FeFL4}2(µ‐F)2FeF4]+ assembly is supported by monodentate L ligands coordinated through their imidazolyl donors, and donating C–H····F interactions to the central [FeF6]3– moiety. The cluster exhibits moderate antiferromagnetic coupling between its iron(III) centres.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2020 Wiley‐VCH GmbH. This is the peer reviewed version of the following article: Capel Berdiell, I, Kulmaczewski, R, Warriner, SL et al. (2 more authors) (2020) Iron and Silver Complexes of 4‐(Imidazol‐1‐yl)‐2,6‐di(pyrazol‐1‐yl)‐pyridine (L), Including a [Fe3(µ‐F)2F6L8]+ Assembly. European Journal of Inorganic Chemistry, 2020 (46). pp. 4334-4340. ISSN 1434-1948, which has been published in final form at https://doi.org/10.1002/ejic.202000782. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. |
Keywords: | Iron; Magnetic properties; N ligands; Silver; Structure elucidation |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemistry (Leeds) > Inorganic Chemistry (Leeds) The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemistry (Leeds) > Organic Chemistry (Leeds) The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Physics and Astronomy (Leeds) > Condensed Matter (Leeds) |
Funding Information: | Funder Grant number EPSRC (Engineering and Physical Sciences Research Council) EP/K012568/1 Leverhulme Trust RPG-2015-095 EPSRC (Engineering and Physical Sciences Research Council) EP/K00512X/1 EPSRC (Engineering and Physical Sciences Research Council) EP/J021156/1 |
Depositing User: | Symplectic Publications |
Date Deposited: | 11 Sep 2020 11:47 |
Last Modified: | 06 Jan 2025 09:41 |
Status: | Published |
Publisher: | Wiley |
Identification Number: | 10.1002/ejic.202000782 |
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Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:165412 |