Schiff base complexes: I reactions of 2,6-pyridinediylbis (N-hydrophenylaldimine) with some metal ions

Tayim, H.A.; Absi, Michelle L.; Darwish, A. H.; Thabet, S.K.

doi:10.1016/0020-1650(75)80055-9

Cited by 28 publications

(1 citation statement)

References 3 publications

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“…Preparation of L (Pyridine-2,6-dicarbaldehyde). The ligand LH 2 was prepared based on the literature procedures published previously 116 by slight modification in the reaction procedure.…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

Tetranuclear Co^II₄O₄ Cubane Complex: Effective Catalyst Toward Electrochemical Water Oxidation

Manohar,

Dhandapani,

Roy

et al. 2024

Inorg. Chem.

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The reaction of Co(OAc) 2 •6H 2 O with 2,2′-[{(1E,1′E)pyridine-2,6-diyl-bis(methaneylylidene)bis(azaneylylidene)}diphenol](LH 2 ) a multisite coordination ligand and Et 3 N in a 1:2:3 stoichiometric ratio forms a tetranuclear complex Co 4 (L) 2 (μ-η 1 :η 1 -OAc) 2 (η 2 -OAc) 2 ]• 1.5 CH 3 OH• 1.5 CHCl 3 (1). Based on X-ray diffraction investigations, complex 1 comprises a distorted Co 4 O 4 cubane core consisting of two completely deprotonated ligands [L] 2− and four acetate ligands. Two distinct types of Co II centers exist in the complex, where the Co(2) center has a distorted octahedral geometry; alternatively, Co(1) has a distorted pentagonal−bipyramidal geometry. Analysis of magnetic data in 1 shows predominant antiferromagnetic coupling (J = −2.1 cm −1 ), while the magnetic anisotropy is the easy-plane type (D 1 = 8.8, D 2 = 0.76 cm −1 ). Furthermore, complex 1 demonstrates an electrochemical oxygen evolution reaction (OER) with an overpotential of 325 mV and Tafel slope of 85 mV dec −1 , required to attain a current density of 10 mA cm −2 and moderate stability under alkaline conditions (pH = 14). Electrochemical impedance spectroscopy studies reveal that compound 1 has a charge transfer resistance (R ct ) of 2.927 Ω, which is comparatively lower than standard Co 3 O 4 (5.242 Ω), indicating rapid charge transfer kinetics between electrode and electrolyte solution that enhances higher catalytic activity toward OER kinetics.

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“…Preparation of L (Pyridine-2,6-dicarbaldehyde). The ligand LH 2 was prepared based on the literature procedures published previously 116 by slight modification in the reaction procedure.…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

Tetranuclear Co^II₄O₄ Cubane Complex: Effective Catalyst Toward Electrochemical Water Oxidation

Manohar,

Dhandapani,

Roy

et al. 2024

Inorg. Chem.

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σ‐Pyridine Coordination Compounds with Nontransition Metals

1985

Chemistry of Heterocyclic Compounds: A Series of Monographs

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σ‐Pyridine Coordination Compounds with Transition Metals

1985

Chemistry of Heterocyclic Compounds: A Series of Monographs

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Schiff base complexes: I reactions of 2,6-pyridinediylbis (N-hydrophenylaldimine) with some metal ions

Cited by 28 publications

References 3 publications

Tetranuclear Co^II₄O₄ Cubane Complex: Effective Catalyst Toward Electrochemical Water Oxidation

Tetranuclear Co^II₄O₄ Cubane Complex: Effective Catalyst Toward Electrochemical Water Oxidation

σ‐Pyridine Coordination Compounds with Nontransition Metals

σ‐Pyridine Coordination Compounds with Transition Metals

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Schiff base complexes: I reactions of 2,6-pyridinediylbis (N-hydrophenylaldimine) with some metal ions

Cited by 28 publications

References 3 publications

Tetranuclear CoII4O4 Cubane Complex: Effective Catalyst Toward Electrochemical Water Oxidation

Tetranuclear CoII4O4 Cubane Complex: Effective Catalyst Toward Electrochemical Water Oxidation

σ‐Pyridine Coordination Compounds with Nontransition Metals

σ‐Pyridine Coordination Compounds with Transition Metals

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Product

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Tetranuclear Co^II₄O₄ Cubane Complex: Effective Catalyst Toward Electrochemical Water Oxidation

Tetranuclear Co^II₄O₄ Cubane Complex: Effective Catalyst Toward Electrochemical Water Oxidation