Elucidating the exchange interactions in a {GdIIICuII4} propellor

Heras Ojea, M. J., Wilson, C. , Cirera, J., Oshio, H., Ruiz, E. and Murrie, M. (2023) Elucidating the exchange interactions in a {GdIIICuII4} propellor. Dalton Transactions, 52(10), pp. 3203-3209. (doi: 10.1039/D2DT03901J) (PMID:36799208)

Abstract

The multinucleating ligand 2,2'-(propane-1,3-diyldiimino)bis[2-(hydroxymethyl)-propane-1,3-diol] (Bis-tris propane, H6L) is used in the design of a new family of 3d-4f complexes that display an unusual {LnCu4} four-blade propeller topology. We report the synthesis, structure and magnetic characterisation of [LnCu4(H4L)4](Cl)2(ClO4)·6CH3OH, where Ln = Gd (1), Tb (2), Dy (3), La (4). Previously we have used CH3COO− and NO3− as co-ligands with bis-tris propane, but here the use of Cl− and ClO4− leads to coordination of four {Cu(H4L)} units around the central Ln ion. A magneto-structural analysis reveals that the geometrical arrangement of the Cu(II) centres defined by the H4L2− ligands controls the magnetic communication between the different metal centres. DFT calculations performed on the isotropic (Gd) and diamagnetic (La) systems 1 and 4 help to unravel the intriguing exchange interactions.

• Item Type: Articles
• Additional Information: MHO is thankful to the Japan Society for the Promotion of Science (JSPS) for the Short-Term Pre/Postdoctoral Fellowship for International Research. JC and ER thank the Spanish Ministerio de Ciencia e Innovació n for the Maria de Maeztu Excellence Accreditation (CEX2021-001202-M). ER thanks the Spanish Ministerio de Ciencia e Innovació n (PID2021-122464NB-I00), and Generalitat de Catalunya for an ICREA Academia award and for the SGR2017-1289 grant. J.C. thanks the Spanish MICINN for a Ramó n y Cajal research contract (RYC2018- 024692-I) and the Spanish MICINN research grant (PID2020-115165GB-I00).
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Wilson, Dr Claire and Heras Ojea, Miss Maria Jose and Murrie, Professor Mark
• Authors: Heras Ojea, M. J., Wilson, C., Cirera, J., Oshio, H., Ruiz, E., 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: 02 February 2023
• Copyright Holders: Copyright © 2023 The Royal Society of Chemistry
• First Published: First published in Dalton Transactions 52(10): 3203-3209
• Publisher Policy: Reproduced in accordance with the publisher copyright policy