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Self-assembly of a trigonal bipyramidal architecture with stabilisation of iron in three spin states

DOI: 10.1039/D1CC04413C DOI Help

Authors: Lauren L. K. Taylor (University of Manchester) , Iñigo J. Vitorica-Yrezabal (University of Manchester) , Ivana Borilović (University of Manchester) , Floriana Tuna (University of Manchester) , Imogen A. Riddell (University of Manchester)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Chemical Communications , VOL 469

State: Published (Approved)
Published: October 2021
Diamond Proposal Number(s): 23480

Open Access Open Access

Abstract: Self-assembly and characterisation of a supramolecular trigonal bipyramidal iron cage containing an [FeIII(μ2-F)6(FeII)3]3+ star motif at its core is reported. The complex can be formed in a one step reaction using an heterotopic ligand that supports site-specific incorporation of iron in three distinct electronic configurations: low-spin FeII, high-spin FeII and high-spin FeIII, with iron(II) tetrafluoroborate as the source of the bridging fluorides. Formation of a μ2-F bridged mixed-valence FeII–FeIII star is unprecedented. The peripheral high-spin FeII centres of the mixed-valence tetranuclear star incorporated in the iron cage are highly anisotropic and engage in F-mediated antiferromagnetic exchange with the central FeIII ion.

Subject Areas: Chemistry

Instruments: I19-Small Molecule Single Crystal Diffraction

Added On: 15/10/2021 08:31


Discipline Tags:

Inorganic Chemistry Chemistry

Technical Tags:

Diffraction Single Crystal X-ray Diffraction (SXRD)