Journal article
Modulation of Charge Distribution in Cobalt-?-Diimine Complexes toward Valence Tautomerism
Moya A Hay, Jett T Janetzki, Varshini J Kumar, Robert W Gable, Rodolphe Clerac, Alyona A Starikova, Paul J Low, Colette Boskovic
Inorganic Chemistry: including bioinorganic chemistry | American Chemical Society | Published : 2022
Abstract
Valence tautomerism (VT) and spin crossover (SCO) are promising avenues for developing a range of molecular materials for sensing, memory, and optoelectronic applications. However, these phenomena arise only when specific metal-ligand combinations are employed. The underexplored combination of cobalt(II/III) paired with bis((aryl)imino)acenapthene (Ar-BIAN) ligands, which can exist as neutral Ar-BIAN0 (L0), monoanionic radical Ar-BIAN•- (L•-), and dianionic Ar-BIAN2- (L2-) forms, has potential to afford both VT and SCO. Aiming to develop a new family of switchable molecules, we systematically explored a dual-tuning approach by varying the redox state and aryl substituents in a series of homo..
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Awarded by Australian Research Council
Awarded by Ministry of Science and Higher Education of the Russian Federation
Funding Acknowledgements
C.B. thanks the Australian Research Council for financial support (DP190100854 and DP220100398). This research was undertaken in part using the MX1 and MX2 beamline at the Australian Synchrotron, part of ANSTO, Australia. A.A.S. thanks the Ministry of Science and Higher Education of the Russian Federation (State assignment in the field of scientific activity, project no. 0852-2020-0031). The authors are thankful to the University of Bordeaux, the Region Nouvelle Aquitaine, Quantum Matter Bordeaux (QMBx), the Centre National de la Recherche Scientifique (CNRS), and the Association Francaise de Magnetisme Moleculaire. They also thank Prof. Keith Murray, Dr. Wasinee Phonsri, and Maja Dunstan for preliminary magnetic measurements.