Chrysin functionalized NHC–Au(i) complexes: synthesis, characterization and effects on the nematode Caenorhabditis elegans

Abstract

The synthesis and biological effects on the nematodeCaenorhabditis elegansof chrysin functionalized Au(i)–NHC complexes are reported.

Effect of Inhibitor on Adsorption Behavior and Mechanism of Micro-Zone Corrosion on Carbon Steel

“…Based on the results of the analysis of the high-resolution N 1s XPS spectrum, we can conclude that it is the formation of chemical bonds between elemental N and Fe that facilitate the adsorption of the inhibitor on the carbon steel surface for this type of inhibitor, which is consistent with the findings of Reference [36]. In Figure 4e, it can be seen that there is a peak located at 163.9 eV, which corresponds to the C–S bond [37]. In contrast, no S 2p peak can be seen in the spectrum of the blank sample.…”

Confinement of a Au–N-heterocyclic carbene in a Pd6L12 metal–organic cage

“…Both L and Pd 6 L 12 exhibit characteristic C-N carbene bands typically at 1467 and 1443 cm À1 . 29 The strong absorption band at approximately 1384 cm À1 is attributed to the NO 3 À ions for…”

Synthesis and Antimicrobial Activity of Carbene Complexesof the Imidazole, Benzimidazole and 1,2,4‐Triazole Series

“…In the 1 H NMR spectra of fluorophenyl derivatives of 6 a-c, in addition to the signals of aromatic protons, characteristic signals of the tert-butyl protons at δ 1.77-1.82 ppm were found. In the 13 C NMR spectra, the signals of these groups are observed at δ 30.3-31.0 ppm (CH 3 C) and δ 61.5-61.77 ppm (ipso-C). The signals of aromatic carbon atoms are specifically splitted on fluorine atoms (see the experimental part).…”

“…In the 1 H NMR spectra of copper(I) complexes 3 a,b proton signals only of aromatic nuclei were found. In the 13 C NMR spectra the signals of carbenoid carbon atoms CÀ Cu at δ 180.8-182.9 ppm are most characteristic. In the spectrum of compound 3 b a carbon signal of the trifluoromethyl group was found at δ 124.0 ppm.…”

“…Carbenoid compounds (organic salts and carbene complexes of transition metals) are well known for their biological activities, [1][2][3][4][5] including antitumor, antimicrobial (antibacterial, antifungal), [6][7][8][9][10] antimalarial, [11] antileishmanial, [12] antinematodic [13] actions, properties of inhibitors of mosquitoes, [14] enzymes, [15] etc. Among them, derivatives of fluorine-containing, carbene-heterocyclic derivatives (e. g., PEP-PSI-complexes), copper carbene complexes and complexes with long-chain aliphatic substituents have not been studied enough.…”