Copper coordination polymer with lattice water molecules and strong electrocatalytic OER activity

Results in Chemistry, Год журнала: 2023, Номер 6, С. 101140 - 101140

Опубликована: Сен. 29, 2023

The versatility of organic ligand and metal coordination geometry produced polymer with intriguing network structure exciting functional properties. Herein, we have synthesized a copper (Cu-HS) using an amino acid based multidentate explored its electrocatalytic OER activity in alkaline condition. Single crystal structural studies showed the formation 1D inclusion lattice water. Copper ions Cu-HS displayed octahedral square pyramidal geometry. Electrocatalytic medium strongly enhanced for that required overpotential 273 mV to achieve benchmark current density 10 mA/cm2. Tafel slope analysis electrochemical impedance suggested faster reaction kinetics at electrode surface modified Cu-HS. After catalysis, XPS FTIR spectra conversion oxide during electrocatalysis.

Язык: Английский

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CCl4-TMEDA-CuCl—A Novel Convenient Catalytic System for Dimerization of Terminal Acetylenes in Mild Conditions

Catalysts, Год журнала: 2023, Номер 13(10), С. 1330 - 1330

Опубликована: Сен. 28, 2023

A novel catalytic system for homocoupling terminal acetylenes was elaborated based on CuCl as a catalyst (10 mol%), TMEDA base and CCl4 an oxidant. The influence of the solvent, base, amount reaction investigated. Methanol found to be solvent choice. broad synthetic scope demonstrated. Diynes with various substituents were prepared in up 92% yields. possible mechanism is discussed.

Язык: Английский

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Impact of Surface Modification on the Oxidation of Linear Aliphatic Alcohols by Vanadium Complexes Supported on Merrifield Resin with Mixed Functionality Ligands

ChemistrySelect, Год журнала: 2024, Номер 9(36)

Опубликована: Сен. 19, 2024

Abstract Two oxidovanadium(IV) complexes [VO(xbp‐sc)] ( 1 ) and [VO(xbp‐tc)] 2 were prepared using hydrazine‐ether mixed functionality ligands Hxbp‐sc I Hxbp‐tc II ), respectively. Complexes carefully grafted separately into imidazole‐modified chloromethylated polystyrene (Ps−Im) unmodified (PS−Cl) beads. Successfully anchored vanadium Ps−Im‐[VO(xbp‐sc)] 3 Ps−Im‐[VO(xbp‐tc)] 4 Ps‐[VO(xbp‐sc)] 5 Ps‐[VO(xbp‐tc)] 6 tested for their catalytic potential towards the oxidation of aliphatic alcohols in presence hydrogen peroxide. Polymer‐grafted catalysts display excellent substrate conversion compared to most recent reports good recyclability up three cycles without losing much reactivity. High TOF values range 183–591 h −1 are observed supported – . The highest is ethanol (63–97 %) under optimized reaction conditions. Mainly, better obtained with polymer beads than those on ). Moreover, semicarbazide group ligand framework show reactivity alcohol fewer carbon atoms. On contrary, longer chains oxidize more easily catalyst thiosemicarbazide frameworks

Язык: Английский

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Co-crystals of thiobarbituric acid and N-heterocyclic compounds: Synthesis, structural, solubility, computational, and antilymphoma activity

Next Materials, Год журнала: 2024, Номер 7, С. 100375 - 100375

Опубликована: Сен. 23, 2024

Язык: Английский

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C-H Bond Activation Over Chitosan Based Fe(III) and Ni(II) Catalysts

Journal of the Indian Chemical Society, Год журнала: 2024, Номер unknown, С. 101395 - 101395

Опубликована: Сен. 1, 2024

Язык: Английский

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