Synthesis, spectral characterization, and catalytic efficiency of aroylhydrazone-based Cu(ii) complexes

Abstract

A series of copper(II) complexes [Cu(DKMB)Cl] (1), [Cu(DKMB)NO3] (2), [Cu(APMBH)Cl2] (3) and [Cu(APMB)NO3(H2O)] (4), (where DKMBH = di-2-pyridyl ketone-4-methoxybenzhydrazone and APMBH = 2-acetylpyrazine-4-methoxybenzhydrazone) were prepared. The structural aspects of aroylhydrazones...

Aroylhydrazone‐based nickel(II) complexes: Synthesis and their structural, density functional theory (DFT), biological and catalytic studies

“…In the FT-IR spectra of the aroylhydrazones, the distinctive vibrational bands associated with ν(N-H) and ν(C=O) at 3450 and 1674 cm À1 for DKMBHÁH 2 O and 3337 and 1661 cm À1 for APMBHÁH 2 O are observed, confirming the presence of the amido form of the aroylhydrazone in the solid state. 23,24,28,54 66 The stretching vibration of the azomethine ν(C=N) bond results in an additional band at 1610 cm À1 , supporting the condensation of the hydrazide and carbonyl moieties. 28,54 The N-N vibrational bands in the range of 1145-1190 cm À1 are observed for aroylhydrazones and nickel complexes.…”

“…APMBH monohydrate was synthesized by carrying out a condensation reaction between 2-acetylpyrazine and 4-methoxybenzhydrazide in methanol, following the established procedure as reported (Scheme S1). 54…”

Green Biocatalyst for Ultrasound-Assisted Thiazole Derivatives: Synthesis, Antibacterial Evaluation, and Docking Analysis

“…These factors indicate that using Cs hydrogel as a catalyst in organic synthesis is preferable to using Schiff-base complex-based catalysts. Although Schiff-base complexes of metal ions demonstrated good catalytic activity, improving the yield and selectivity in a variety of reactions, Cs-based hydrogels are more potent in their catalytic capacity; in addition, they are environmentally green. , …”

“…These factors indicate that using Cs hydrogel as a catalyst in organic synthesis is preferable to using Schiff-base complex-based catalysts. Although Schiff-base complexes of metal ions demonstrated good catalytic activity, improving the yield and selectivity in a variety of reactions, 17 Cs-based hydrogels are more potent in their catalytic capacity; in addition, they are environmentally green. 18,19 This article is licensed under CC-BY-NC-ND 4 Many advantages come with using ultrasound-assisted reactions: quicker reaction times, an easy-to-implement experimental plan, high yields, enhanced selectivity, and clean processes.…”

Halide mediated modulation of magnetic interaction and anisotropy in dimeric Co(ii) complexes

“…The primary synthetic approach for fabricating single-molecule magnets (SMMs), which are essential elements in molecular spintronic devices and spin qubit addressable quantum computing for switching operation, involves the development of high-dimensional polynuclear complexes out of paramagnetic transition metals coupled with appropriate bridging and terminal ligands. 1–3 One of the standard effective techniques for creating multinuclear complexes is the use of innovative, flexible multidentate ligands that can simultaneously coordinate to several metal ions. 4–6 These simple organic ligands, along with suitable bridging groups like halides, carboxylates, etc.…”