Journal article
Controlling Spin Crossover in a Family of Dinuclear Fe(III) Complexes via the Bis(catecholate) Bridging Ligand
JT Janetzki, MG Chegerev, GK Gransbury, RW Gable, JK Clegg, RJ Mulder, GNL Jameson, AA Starikova, C Boskovic
Inorganic Chemistry | AMER CHEMICAL SOC | Published : 2023
Abstract
Spin crossover (SCO) complexes can reversibly switch between low spin (LS) and high spin (HS) states, affording possible applications in sensing, displays, and molecular electronics. Dinuclear SCO complexes with access to [LS-LS], [LS-HS], and [HS-HS] states may offer increased levels of functionality. The nature of the SCO interconversion in dinuclear complexes is influenced by the local electronic environment. We report the synthesis and characterization of [{FeIII(tpa)}2spiro](PF6)2 (1), [{FeIII(tpa)}2Br4spiro](PF6)2 (2), and [{FeIII(tpa)}2thea](PF6)2 (3) (tpa = tris(2-pyridylmethyl)amine, spiroH4 = 3,3,3′,3′-tetramethyl-1,1′-spirobi(indan)-5,5′,6,6′-tetraol, Br4spiroH4 = 3,3,3′,3′-tetram..
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Grants
Awarded by Australian Government
Funding Acknowledgements
C.B. and J.K.C. thank the Australian Research Council for funding (FT190100293; LE170100144). J.T.J. acknowledges support from the Australian Government for a Research Training Stipend. M.G.C. and A.A.S. thank the Ministry of Science and Higher Education of the Russian Federation (State assignment in the field of scientific activity, project no. FENW-2023-0017). G.K.G. acknowledges support from the European Research Council (CoG-816268), awarded to Prof. David Mills. This work was performed in part at the Trace Analysis for Chemical, Earth and Environmental Sciences (TrACEES) Platform at the University of Melbourne. This research was undertaken in part using the MX1 and MX2 beamlines at the Australian Synchrotron, part of ANSTO, Victoria, Australia and made use of the Australian Cancer Research Foundation (ACRF) detectors (for MX2). We acknowledge the Australian Research Council for an equipment grant (LE210100009 and LE230100048). We acknowledge the EPSRC UK National Electron Paramagnetic Resonance Service for access to the SQUID magnetometer (EP/S033181/1).