Cyclic pyridyltriazole–Cu(ii) dimers as supramolecular hosts

Abstract

Tetradentate bis(pyridyltriazole) ligands containing aromatic spacers of different sizes react with Cu(2+) to produce metallo-supramolecular hosts that bind 1,4-diazabicyclo[2.2.2]octane molecules internally.

RETRACTED ARTICLE: Reduction of carbon dioxide to oxalate by a binuclear copper complex

“…The measurements were carried out in DMF (0.1 M Bu 4 NPF 6 ), with glassy carbon working electrode, Ag/AgCl reference electrode, and Pt wire counter electrode. The ligand, m-xpt, was synthesized by using a literature procedure 21 . Fig.…”

“…Instead of using two molecules of binuclear Cu(I) complex for reductive coupling of CO 2 molecules as depicted in Bouwman's work, we wished to prepare a single macrocyclic complex that can serve as a host for CO 2 reduction. We chose the m-xylylene group as a spacer to connect our two pyridyltriazole chelating units 21 . Other researchers have used multifunctional ligands to control the spatial position of two metal centres.…”

Functional metallosupramolecular architectures using 1,2,3-triazole ligands: it's as easy as 1,2,3 “click”

“…Maverick and co-workers have synthesised similar [Cu 2 L 2 ] 4+ macrocycles from Cu(II) ions and bis-(2-pyridyl-1,2,3-triazole) ligands, incorporating either a m-xylene (1,3-) or 2,7-dimethylnaphthalene spacer unit. 28 The larger cavity of the naphthalene-based metallo-macrocycle enabled binding of DABCO and other guests, with the guest bridging the two internal axial sites of the Cu(II) metal ions, while the xylyl-based system was too small. However, this smaller system (Fig.…”

Synthesis, structure, stability and antimicrobial activity of a ruthenium(II) helicate derived from a bis-bidentate “click” pyridyl-1,2,3-triazole ligand

“…We [39][40][41][42][43][44] and others [45][46][47][48][49][50][51][52][53][54][55] have explored the use of 1,4-disubstituted 1,2,3-triazole containing ''click'' ligands in the development of functionalized metallosupramolecular architectures and have shown that metallomacrocycles, cages and helicates can be readily generated. As part of that work we developed a small family of bis-2-(1-R-1H-1,2,3-triazol-4-yl)pyridine ligands 1 [56] (Scheme 1) and showed that they would assemble into [Fe 2 L 3 ] 4+ metallosupramolecular helicates [57] when treated with Fe(II) ions.…”