Synthesis and Characterization of Ag(I) Complexes Derived from New N-Heterocyclic Carbenes

Abstract

Two new unsymmetrical imidazolium salts viz., [1-(4-ethylphenyl)-3-propyl-1H-imidazole-3-ium bromide] (3) and [1-(2,6-dimethylphenyl)-3-propyl-1H-imidazole-3-ium bromide] (4) have been synthesized via the reaction of propyl bromide with imidazole derivatives, [1-(4-ethylphenyl)-1Himidazole] (1) and [1-(2,6-dimethylphenyl)-1H-imidazole] (2) in absence of solvent. Then two new N-heterocyclic carbene silver complexes (5 and 6) were prepared through the reaction of imidazoluim salts (3 and 4) as a source of N-heterocyclic carbene with Ag2O by in situ method. These complexes can be used in the future as a transfer agent for preparing other transitional metal carbine complexes (NHCs) via transmetallation method. The formation of these compounds was confirmed by spectral analysis.

Synthesis of Silver(I) Complexes Containing N and P Donor Ligands

“…al., 2016;Kokunov et. al., 2016;Hasson et al, 2019;Atlı & Gülle, 2019), N^N (III-VII) (Durini et al, 2017;Xing et al, 2020;Fresta et al, 2019), N^N^N (VIII) Artem'ev et al, 2019), P^P (IX-XI) (Kaltzoglou et al, 2007;Bruce et al, 2016;Hutton et al, 1983;Gimeno et al, 1995), P^N (XII, XIII) (Hung-Low & Klausmeyer, 2008;Škoch et al, 2017;Artem'ev, 2020), P^N^P (XIV) (Nayeri et al, 2020) (Figure 1). Ag(I) centres form mononuclear (Medici et al, 2016), binuclear (Medici et al, 2016;Hung-Low & Klausmeyer, 2008;Artem'ev, et.…”