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[CrIII8NiII6]n+ Heterometallic Coordination Cubes

EaStCHEM School of Chemistry, The University of Edinburgh, David Brewster Road, Edinburgh EH3 5JF, UK
UK National Crystallography Service, Chemistry, Highfield Campus, University of Southampton, Southampton SO17 1BJ, UK
Department of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, UK
Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen, Denmark
Authors to whom correspondence should be addressed.
Academic Editors: William T. A. Harrison, R. Alan Aitken and Paul Waddell
Molecules 2021, 26(3), 757;
Received: 19 January 2021 / Revised: 29 January 2021 / Accepted: 30 January 2021 / Published: 2 February 2021
Three new heterometallic [CrIII8NiII6] coordination cubes of formulae [CrIII8NiII6L24(H2O)12](NO3)12 (1), [CrIII8NiII6L24(MeCN)7(H2O)5](ClO4)12 (2), and [CrIII8NiII6L24Cl12] (3) (where HL = 1-(4-pyridyl)butane-1,3-dione), were synthesised using the paramagnetic metalloligand [CrIIIL3] and the corresponding NiII salt. The magnetic skeleton of each capsule describes a face-centred cube in which the eight CrIII and six NiII ions occupy the eight vertices and six faces of the structure, respectively. Direct current magnetic susceptibility measurements on (1) reveal weak ferromagnetic interactions between the CrIII and NiII ions, with JCr-Ni = + 0.045 cm−1. EPR spectra are consistent with weak exchange, being dominated by the zero-field splitting of the CrIII ions. Excluding wheel-like structures, examples of large heterometallic clusters containing both CrIII and NiII ions are rather rare, and we demonstrate that the use of metalloligands with predictable bonding modes allows for a modular approach to building families of related polymetallic complexes. Compounds (1)–(3) join the previously published, structurally related family of [MIII8MII6] cubes, where MIII = Cr, Fe and MII = Cu, Co, Mn, Pd. View Full-Text
Keywords: molecular magnetism; supramolecular chemistry; heterometallic clusters; magnetometry; EPR spectroscopy molecular magnetism; supramolecular chemistry; heterometallic clusters; magnetometry; EPR spectroscopy
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MDPI and ACS Style

O’Connor, H.M.; Sanz, S.; Scott, A.J.; Pitak, M.B.; Klooster, W.T.; Coles, S.J.; Chilton, N.F.; McInnes, E.J.L.; Lusby, P.J.; Weihe, H.; Piligkos, S.; Brechin, E.K. [CrIII8NiII6]n+ Heterometallic Coordination Cubes. Molecules 2021, 26, 757.

AMA Style

O’Connor HM, Sanz S, Scott AJ, Pitak MB, Klooster WT, Coles SJ, Chilton NF, McInnes EJL, Lusby PJ, Weihe H, Piligkos S, Brechin EK. [CrIII8NiII6]n+ Heterometallic Coordination Cubes. Molecules. 2021; 26(3):757.

Chicago/Turabian Style

O’Connor, Helen M., Sergio Sanz, Aaron J. Scott, Mateusz B. Pitak, Wim T. Klooster, Simon J. Coles, Nicholas F. Chilton, Eric J.L. McInnes, Paul J. Lusby, Høgni Weihe, Stergios Piligkos, and Euan K. Brechin 2021. "[CrIII8NiII6]n+ Heterometallic Coordination Cubes" Molecules 26, no. 3: 757.

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