Journal article
Cobalt Complexes with Aminophenolate Ligands: Spin Crossover and Ligand Versatility
IH Ismail, MJ Giansiracusa, RW Gable, L Goerigk, C Boskovic
Inorganic Chemistry | AMER CHEMICAL SOC | Published : 2025
Abstract
A search for switchable molecules has afforded a family of cobalt complexes featuring derivatives of 2-aminophenol: 4,6-di-tert-butyl aminophenol (H2LH) and 2-anilino-4,6-di-tert-butyl aminophenol (H2LPh). The heteroleptic cobalt complexes incorporate a Mentpa ligand (tpa = tris(2-pyridylmethyl)amine; n = 0-3), which involves the methylation of the 6-position of the pyridine ring). Eight members of this family have been synthesized and characterized: [CoII(HLPhAP)−(tpa)](BPh4) (1), [CoII(HLPhAP)−(Me2tpa)](BPh4) (2a), [CoII(LPhISQ)•−(Me2tpa)](BPh4) (2b), [CoII(HLPhAP)−(Me3tpa)](BPh4) (3a), [CoII(LPhISQ)•−(Me3tpa)](BPh4) (3b), [CoIII(HLHAP)−(tpa)] (BPh4)(ClO4) (4a), [CoIII(LHISQ)•−(tpa)](BPh4)..
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Awarded by National Computational Infrastructure
Funding Acknowledgements
C.B. thanks the Australian Research Council for financial support (DP220100398). L.G. is grateful for generous allocations of computational resources from the National Computational Infrastructure (NCI) Facility within the National Computational Merit Allocation Scheme (project fk5) and Research Platform Services (ResPlat) at The University of Melbourne (project punim0094). This research was additionally supported by the Research Computing Services NCI Access scheme at The University of Melbourne. This research was undertaken in part using the MX1 and MX2 beamline at the Australian Synchrotron, part of ANSTO, Australia. And made use of the Australian Cancer Research Foundation (ACRF) detector (for MX2). We acknowledge the Australian Research Council for an equipment grant (LE210100009). This work was performed in part at the Trace Analysis for Chemical, Earth and Environmental Sciences (TrACEES) Platform at the University of Melbourne.