“Click-and-click” – hybridised 1,2,3-triazoles supported Cu(i) coordination polymers for azide–alkyne cycloaddition

Abstract

Two novel pyridyl and thioether hybridised 1,2,3-triazole ligands 1-(2-picolyl)-4-(2-(methylthio)-pyridine)-1H-1,2,3-triazole (L1) and 1-(4-picolyl)-4-(2-(methylthio)-pyridine)-1H-1,2,3-triazole (L2) were prepared from CuAAC click reactions. Reactions of CuI with the ligands L1 and L2 yielded two one-dimensional coordination polymers [Cu6I6(L1)2]n (1) and [Cu2I2(L2)2]n (2). Single-crystal X-ray diffraction reveals that 1 and 2 are polymeric with [Cu6I6] and [Cu2I2] respectively as building blocks. Both ligands (L1 and L2) and complexes (1 and 2) are photoluminescence active. Complexes 1 and 2 are also catalytically active towards azide-alkyne cycloaddition reactions.

Assembly of Coordination Polymers Using Thioether‐Functionalized Octasilsesquioxanes: Occurrence of (CuX)n Clusters (X=Br and I) within 3D‐POSS Networks

“…CPs containing Cu I have attracted much interest due to their ease of synthesis, the propensity of CuX salts to aggregate to higher‐nuclear cluster cores, their rich structural diversity and their potential applications in photo(thermo)chromism, photoluminescence, catalysis and gas sorption . Several research groups, including ours, have investigated the formation of various CPs and MOFs by reacting copper(I) halides with different thioethers .…”

Photophysics and photochemistry of 1,2,3-triazole-based complexes

“…[157] The triazole based ligands 128 to 132 have been utilised by Hor and co-workers for the preparation of a range of complexes, clusters and coordination polymers using Zn(II), Co(II), Cu(I/II) metal ions. [158][159][160][161][162] The copper(I) containing materials were typically observed to show photoluminescence deriving from ligand-centred states and in some cases MLCT and CC-based states.…”

Metal-catalyzed azide-alkyne “click” reactions: Mechanistic overview and recent trends

“…Beside the NHC ligands, Cu(I) complexes bearing one or two α-diimine ligands [119], hybrid nitrogen-sulfur ligand-supported Cu(I)/(II) complexes [120] were also highly efficient. Other recently reported useful systems include Cu(II) complexes supported by mixed NN, NO, and NS 1,2,3-triazole based ligands utilized together with sodium ascorbate [121], Cu(I) complexes with pyridyl and thioether hybridized 1,2,3-triazole ligands [122], Cu(I) complexes containing sulfur-based ligand [123], Cu(I) complexes with new chiral phosphine ligand [124], dinuclear Cu(I) complex (Cu 2 (pip) 2 ) with (2-picolyliminomethyl)pyrrole anion ligand [125], and binuclear Cu(I) complex of (N′1E,N′2E)-N′1,N′2-bis(phenyl(pyridin-2-yl)methylene)oxalohydrazide ligand [126]. On the other hand, Cu(II) species without deliberate addition of a reducing agent for CuAAC reactions have also been investigated.…”