Synthesis and structural characterization of a cobalt(III) complex with an (N,S,O) donor Schiff base ligand: Catechol oxidase and phenoxazinone synthase activities

Ghosh, Ayon Kanti; Purohit, Chandra Shekhar; Ghosh, Rajarshi

doi:10.1016/j.poly.2018.08.021

Cited by 16 publications

(2 citation statements)

References 56 publications

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“…Cobalt( iii ) has an affinity for N-donor atom ligands. 42 Hence, trimethylamine might solubilize cobalt by forming soluble cobalt( iii ) complexes during leaching, without the need for cobalt( iii ) reduction. 43 On the other hand, aldehydes are known to be reducing agents towards cobalt( iii ) species, which makes acetaldehyde a possible cobalt( iii ) reducing agent during leaching of LCO.…”

Section: Resultsmentioning

confidence: 99%

Choline chloride–ethylene glycol based deep-eutectic solvents as lixiviants for cobalt recovery from lithium-ion battery cathode materials: are these solvents really green in high-temperature processes?

et al. 2022

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Section: Resultsmentioning

confidence: 99%

Choline chloride–ethylene glycol based deep-eutectic solvents as lixiviants for cobalt recovery from lithium-ion battery cathode materials: are these solvents really green in high-temperature processes?

et al. 2022

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“…To the best of our knowledge, no example of cationic pentacoordinated (OSNSO)-cobalt(III) complexes were reported. However, several examples of six-coordinated cationic cobalt(III) complexes, supported by one (hexadentate) or two (tridentate) related ligands based of N, S, and O-donors were structurally characterized [66][67][68][69]. It is therefore reasonable to speculate that compound 4 exists more likely as an O-or S-bridged dimeric species or as solvent adduct in coordinating solvents, such as acetone.…”

Section: Synthesis Of the Cobalt(iii) Complexes 3 Andmentioning

confidence: 99%

Cobalt complexes of an OSNSO-tetrapodal pentadentate ligand: Synthesis, structures and reactivity

Thevenin

Daran

Poli

et al. 2021

Inorganica Chimica Acta

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The novel pentadentate tetrapodal proligand 2,6-bis [(2-hydroxyphenyl)sulfanylmethyl]pyridine (1•H2) and its cobalt(II) complex [Co(1)] (2) were synthesized and characterized by several analytical (EA, ESI-MS) and spectroscopic methods (NMR or EPR, FT-IR), including X-ray crystallography for 1•H2. Cyclic voltammetry studies showed that 2 undergoes a reversible metal-based oxidation (Co II /Co III ). Complex 2 was designed to be applied to organometallic mediated radical polymerization (OMRP), however it exhibited an extremely poor solubility in non-coordinating solvents and several vinyl monomers (styrene, vinyl acetate and tert-butyl acrylate), which hampers its potential as moderator. Complex 2 has a high affinity towards Lewis bases, such as pyridine, leading to the clean formation of the monopyridine adduct 2•py, as confirmed by X-ray crystallography. In 2•py, ligand 1 is pentacoordinated to the Co II center, with the two thioether-phenolate (S,O) moieties oriented anti to each other, and the only free coordination site of the octahedron is completed by the additional pyridine, trans to the central pyridine linker of 1. The equilibrium between 2 and 2•py could be studied by 1 H NMR. Complex 2 could be cleanly and quantitatively oxidized to its diamagnetic iodo cobalt(III) analog [Co(1)I] (3), by simple reaction with iodine. The latter could then be subjected to a halide abstraction reaction, mediated by K[B(C6F5)], affording the cationic complex [Co(1)][B(C6F5)], 4. Highlights• Cobalt(II) complexes of a bis(thioether)-bis(phenolato)-pyridyl-based OSNSO-ligand.• Neutral (OSNSO)-cobalt(III) iodide and cationic (OSNSO)-cobalt(III) complexes.• XRD, NMR, CV and EPR studies.• Evaluation in radical polymerization.

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A novel Schiff base cobalt(III) complex induces a synergistic effect on cervical cancer cells by arresting early apoptosis stage

et al. 2021

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Synthesis and structural characterization of a cobalt(III) complex with an (N,S,O) donor Schiff base ligand: Catechol oxidase and phenoxazinone synthase activities

Cited by 16 publications

References 56 publications

Choline chloride–ethylene glycol based deep-eutectic solvents as lixiviants for cobalt recovery from lithium-ion battery cathode materials: are these solvents really green in high-temperature processes?

Choline chloride–ethylene glycol based deep-eutectic solvents as lixiviants for cobalt recovery from lithium-ion battery cathode materials: are these solvents really green in high-temperature processes?

Cobalt complexes of an OSNSO-tetrapodal pentadentate ligand: Synthesis, structures and reactivity

A novel Schiff base cobalt(III) complex induces a synergistic effect on cervical cancer cells by arresting early apoptosis stage

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