Macrocyclic polyamino polythiaether ligands with NxS4-x and NxS5-x donor sets: protonation constants, stability constants, and kinetics of complex formation with the aquocopper(II) ion

“Green” Atom Transfer Radical Polymerization: From Process Design to Preparation of Well-Defined Environmentally Friendly Polymeric Materials

“…The stability constants of the Cu I and Cu II complexes of TPMA, 238 DETA, 225 PMDETA, 225 TETA, 225 HMTETA, 225 Me 6 TREN, 268,269 and cyclam and its S-containing analogues 359,360 are taken from the literature. The Cu I complexes of PMDETA and Me 6 -TREN are not suitable for aqueous ATRP due to very fast disproportionation.…”

Thioether Coordination Chemistry for Molecular Imaging of Copper in Biological Systems

“…The use of sulfur‐based ligands enhances the selectivity for the cuprous over the cupric state, as shown by higher Cu(II) affinity when including nitrogen donors in synthetic copper ligands . However, the use of the sulfur donor cysteine over methionine (or vice versa ) in cuproprotein binding sites can be associated with that specific protein's chemical role and surrounding biological environment.…”

Electron Transfer by Copper Centers

“…Interestingly, the k 11 values observed for these two systems ( Galijasevic 153 has also studied the electron-transfer kinetics of three systems involving N 2 S 2 donor sets designated as [14]aneN 2 S 2 , [14]aneNSSN, and [14]aneNSNS ( Figure 11). 34 All three of these 14-membered macrocyclic ligands form the normal 5,6,5,6 chelate ring sequence, but they differ in terms of the placement of the two nitrogen donors. Koenigbauer 66 had earlier noted a pH dependence when studying the electron-transfer kinetics of these systems in aqueous solution.…”