Structural characterization of a square planar Ni(II) complex and its application as a catalyst for the transfer hydrogenation of ketones

Kadafour, Attahir N.W.; Bala, Muhammad D.

doi:10.1080/00958972.2021.2007890

Cited by 3 publications

(2 citation statements)

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“…This is proof that the oxygen atom attached to the ring participated in the coordination. It has been advanced that the structure of Ni (II) complexes exhibit squareplanar conformation in a coordination environment (Kadafour & Bala, 2021;Saiyed et al, 2021), implying that the structure of Ni(L 1 H) 2 complex should also be square planar (Scheme 4). The results, however, can only be fully deduced after X-ray analysis of the structure.…”

Section: Synthesis and Structure Elucidationmentioning

confidence: 99%

WITHDRAWN: Synthesis, characterization and computational studies of 2-amino-4-substituted thiazoles, their divalent nickel and cobalt complexes and molecular docking studies of their ligands as potent μ-opioid receptor agonists

Sarikavakli

Söyleyici

Erol

et al. 2022

Preprint

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In this study, some 2-amino-4-substituted thiazole derivatives (TH1-TH5) and ligands (L1H and L2H) were synthesized from the reaction of TH1 and TH3 with 2-hydroxybenzaldehyde which were complexed with divalent nickel and cobalt chloride salts to yield complexes: Ni(L1H)2, Co(L1H)2, Ni(L2H)2 and Co(L2H)2. The structure of the compounds was established on the basis of analytical and spectral (1H NMR, 13C NMR and FTIR) data. Computational studies of the derivatives and molecular docking of the ligands were done to establish the potential of the ligands as µ-opioid receptor agonists. The derivatives were successfully synthesized and the total and relative total energies of the tautomeric forms indicated that the enol-imine form was the most stable, which was consistent with NMR results. Molecular docking showed that ligand L1H had the best binding energy (-6.81 Kcal/mol) with an inhibition constant of 10.25. The molecular docking results offer an insight on the structural basis for the comprehension of ligand-binding with µ-opioid receptor which can be harnessed for guiding analgesic drug design based on these derivatives.

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Section: Synthesis and Structure Elucidationmentioning

confidence: 99%

WITHDRAWN: Synthesis, characterization and computational studies of 2-amino-4-substituted thiazoles, their divalent nickel and cobalt complexes and molecular docking studies of their ligands as potent μ-opioid receptor agonists

Sarikavakli

Söyleyici

Erol

et al. 2022

Preprint

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“…In chemical industries, there are many applications of these oxidative transformation reactions such as removal of antibiotics from water, eradication of heavy metals and industrial waste water treatment etc. Now a days, several metal complexes are used as highly efficient catalyst as 2-hydroxy-1-naphthaldehyde Schiff base derived nickel(II) complex and metal complex of Ru 3+, Pd 2+ and Ni 2+ with 2hydroxy-1-naphthaldyhide(H2L) 4 .…”

Section: Introductionmentioning

confidence: 99%

Synthesis and catalytic activity of Cu (II) complex with 4-phenyl 2, 6-di (thiazol-2-yl) pyridine in the oxidation of para-aminophenol

Goel¹,

Rani²

2023

10.5267/j.ccl

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In the present work the synthesis of 4-phenyl-2, 6-di (thiazol-2-yl) pyridine copper chloride (abbreviated as Cu-DTPy) complex using copper (II) chloride and 2, 6-di (thiazol-2-yl) pyridine has been carried out. The complex has been specified by UV-Vis, FT-IR, CHNS and ESI-MS methods of analysis. The synthesized copper complex has been used as catalyst in the oxidation of p-aminophenol using hexacyanoferrate (III) ions as an oxidant in aqueous alkaline medium by kinetic-spectrophotometric method. This experimental work was carried out at optimum pH 11.0 and temperature 25ºC. The variation of effect of concentration of p-aminophenol (abbreviated as PAP), hexacyanoferrate (III) ions, and Cu-DTPy catalyst on reaction rate has been studied. Thermodynamic parameters such as free energy of activation, activation energy, enthalpy and frequency factor have been evaluated with the change in rate of the reaction at four disparate temperatures i.e. 25-40ᵒC. The oxidation products have been identified by FT-IR and ESI-MS spectroscopic analytical techniques. The major product of this reaction is NN’-bis-(p-hydroxyphenyl)-2-hydroxy-5-amino-1,4-benzoquinone di-imine. Thus, this method is highly efficient and environmentally safe to remove PAP from polluted water resources.

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Reduction of C O to CHOH by Metal-Catalyzed Hydrogenation and Transfer Hydrogenation

Xu,

et al. 2024

Reference Module in Chemistry, Molecular Sciences and Chemical Engineering

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Structural characterization of a square planar Ni(II) complex and its application as a catalyst for the transfer hydrogenation of ketones

Cited by 3 publications

References 68 publications

WITHDRAWN: Synthesis, characterization and computational studies of 2-amino-4-substituted thiazoles, their divalent nickel and cobalt complexes and molecular docking studies of their ligands as potent μ-opioid receptor agonists

WITHDRAWN: Synthesis, characterization and computational studies of 2-amino-4-substituted thiazoles, their divalent nickel and cobalt complexes and molecular docking studies of their ligands as potent μ-opioid receptor agonists

Synthesis and catalytic activity of Cu (II) complex with 4-phenyl 2, 6-di (thiazol-2-yl) pyridine in the oxidation of para-aminophenol

Reduction of C O to CHOH by Metal-Catalyzed Hydrogenation and Transfer Hydrogenation

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