Square-planar Co(iii) in {O4} coordination: large ZFS and reactivity with ROS. Issue 85 (8th October 2018)

• Record Type: Journal Article
• Authors: Steele, Jennifer L.; Tahsini, Laleh; Sun, Chen; Elinburg, Jessica K.; Kotyk, Christopher M.; McNeely, James; Stoian, Sebastian A.; Dragulescu-Andrasi, Alina; Ozarowski, Andrew; Ozerov, M.; Krzystek, J.; Telser, Joshua; Bacon, Jeffrey W.; Golen, James A.; Rheingold, Arnold L.; Doerrer, Linda H.
• Is Part Of: Chemical communications. Volume 54:Issue 85(2018)
• Page Start: 12045
• Page End: 12048
• Publication Date: 2018-10-08
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/c8cc04464c
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : Oxidation of distorted square-planar perfluoropinacolate Co compound [Co II (pin F )2 ] 2−, 1, to [Co III (pin F )2 ] 1−, 2, is reported. Abstract : Oxidation of distorted square-planar perfluoropinacolate Co compound [Co II (pin F )2 ] 2−, 1, to [Co III (pin F )2 ] 1−, 2, is reported. Rigidly square-planar2 has an intermediate-spin, S = 1, ground state and very large zero-field splitting (ZFS) with D = 67.2 cm −1 ; | E | = 18.0 cm −1, ( E / D = 0.27), g ⊥ = 2.10, g ‖ = 2.25 and χ TIP = 1950 × 10 −6 cm 3 mol −1 . This Co(iii ) species, 2, reacts with ROS to oxidise two (pin F ) 2− ligands to form tetrahedral [Co II (Hpfa)4 ] 2−, 3 .