Projects per year
Abstract / Description of output
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.
Original language | English |
---|---|
Article number | 757 |
Number of pages | 9 |
Journal | Molecules (Basel, Switzerland) |
Volume | 26 |
Issue number | 3 |
Early online date | 2 Feb 2021 |
DOIs | |
Publication status | E-pub ahead of print - 2 Feb 2021 |
Keywords / Materials (for Non-textual outputs)
- EPR spectroscopy
- heterometallic clusters
- magnetometry
- molecular magnetism
- supramolecular chemistry
Fingerprint
Dive into the research topics of '[CrIII8NiII6]n+ Heterometallic Coordination Cubes'. Together they form a unique fingerprint.Projects
- 2 Finished
-
Magnetic Coordination Capsules: Establishing a Rationally-Designed, Paramagnetic Host-Guest Approach to Molecular Magnets
1/07/17 → 13/11/20
Project: Research
-
Putting the Squeeze on Molecule-Based Magnets
Brechin, E., Kamenev, K., McKeown, N. & Parsons, S.
1/04/16 → 28/02/21
Project: Research