Roberts, TD, Little, M, Kershaw Cook, L et al. (1 more author) (2014) Iron(II) complexes of 2,6-di(1H-pyrazol-3-yl)-pyridine derivatives with hydrogen bonding and sterically bulky substituents. Dalton Transactions, 43 (20). 7577 - 7588. ISSN 1477-9226
Abstract
Syntheses of 2,6-di(5-aminopyrazol-3-yl)pyridine (L(1)), 2,6-di(5-tertbutylcarboxamidopyrazol-3-yl)pyridine (L(2)), 2,6-di(5-tertbutylpyrazol-3-yl)pyridine (L(3)), 2-(5-tertbutylpyrazol-3-yl)-6-(5-methylpyrazol-3-yl)pyridine (L(4)) and 2-(5-tertbutylpyrazol-3-yl)-6-(5-aminopyrazol-3-yl)pyridine (L(5)) are reported. Iron complex salts of the first four ligands were crystallographically characterised. The structures exhibit intermolecular hydrogen bonding between the cations and the anions and/or solvent, leading to a fluorite (flu) net, a 1D ladder structure, and a homochiral self-penetrating helical network related to the (10,3)-a (srs) topology. All the complexes are high-spin in the crystal, and bulk samples are also fully or predominantly high-spin at room temperature and below although two of the dried materials exhibit partial spin-state transitions on cooling.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | (c) 2014, Royal Society of Chemistry. This is an author produced version of a paper published in Dalton Transactions. Uploaded in accordance with the publisher's self-archiving policy. |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 12 Feb 2015 10:50 |
Last Modified: | 30 Jun 2020 14:49 |
Published Version: | http://dx.doi.org/10.1039/c4dt00355a |
Status: | Published |
Publisher: | Royal Society of Chemistry |
Identification Number: | 10.1039/c4dt00355a |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:83007 |