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Light-induced spin-state switching in Fe(II) spin-crossover complexes with thiazole-based chelating ligands

https://doi.org/10.1039/D4DT00308J

Jo, Minyoung; Amanyazova, Botagoz; Yergeshbayeva, Sandugash; Gakiya-Teruya, Miguel; Üngör, Ökten; Lopez_Rivera, Paola; Jen, Natalie; Lukyanenko, Evgeny; Kurkin, Alexander V; Erkasov, Rakhmetulla; et al (June 2024, Dalton Transactions)

Three homoleptic Fe(II) complexes with bidentate thiazole-based ligands exhibit spin-crossover (SCO) at the metal center. Abrupt temperature-driven and light-induced spin transitions are observed due to cooperative interactions between SCO cations.
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Abrupt Spin Transition in a Heteroleptic Fe(II) Complex with Pendant Naphthalene Functionality

https://doi.org/10.1021/acs.inorgchem.2c01490

Yergeshbayeva, Sandugash; Hrudka, Jeremy J.; Jo, Minyoung; Gakiya-Teruya, Miguel; Meisel, Mark W.; Shatruk, Michael (July 2022, Inorganic Chemistry)

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Investigating reactivity and electronic structure of copper(II)-polypyridyl complexes and hydrogen peroxide

https://doi.org/10.1016/j.ica.2020.120168

Khazanov, Thomas M.; Botcha, Niharika Krishna; Yergeshbayeva, Sandugash; Shatruk, Michael; Mukherjee, Anusree (February 2021, Inorganica Chimica Acta)
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Pyridyl-Thioethers as Capping Ligands for the Design of Heteroleptic Fe(II) Complexes with Spin-Crossover Behavior

https://doi.org/10.3390/magnetochemistry7100134

Üngör, Ökten; Igimbayeva, Dilyara; Dragulescu-Andrasi, Alina; Yergeshbayeva, Sandugash; Delgado, Teresa; Greer, Samuel M.; Donalson, Gabrielle; Jo, Minyoung; Erkasov, Rakhmetulla; Shatruk, Michael (October 2021, Magnetochemistry)

Mononuclear heteroleptic complexes [Fe(tpma)(bimz)](ClO4)2 (1a), [Fe(tpma)(bimz)](BF4)2 (1b), [Fe(bpte)(bimz)](ClO4)2 (2a), and [Fe(bpte)(bimz)](BF4)2 (2b) (tpma = tris(2-pyridylmethyl)amine, bpte = S,S′-bis(2-pyridylmethyl)-1,2-thioethane, bimz = 2,2′-biimidazoline) were prepared by reacting the corresponding Fe(II) salts with stoichiometric amounts of the ligands. All complexes exhibit temperature-induced spin crossover (SCO), but the SCO temperature is substantially lower for complexes 1a and 1b as compared to 2a and 2b, indicating the stronger ligand field afforded by the N2S2-coordinating bpte ligand relative to the N4-coordinating tpma. Our findings suggest that ligands with mixed N/S coordination can be employed to discover new SCO complexes and to tune the transition temperature of known SCO compounds by substituting for purely N-coordinating ligands.
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