2966-50-9Relevant articles and documents
The effect of stabilizers on reduction of silver(I) ions in ethyl acetate
Smagin,Larina
, (2014)
The effects of polyethylene glycol and polymethyl methacrylate on reduction of silver(I) ions in the CF3COOAg-Qr-EA system (where Qr is quercetin and EA is ethyl acetate) were studied spectrophoto-metrically. The introduct
Ion-association and solvation of some copper (I), silver (I) and tetraalkylammonium salts in binary mixtures of acetonitrile with n-butyronitrile and N,N-dimethylacetamide
Gill, Dip Singh,Kumari, Avnesh,Gupta, Rahul,Jauhar,Puri
, p. 1099 - 1106 (2005)
Molar conductances of Bu4NBPh4, Bu 4NClO4, Bu4NI, Bu4NBr, Bu 4NCF3COO, Pr4NBr, Et4NI, Et 4NBPh4, NaClO4, NaBPh4, [Cu(CH 3CN)4]ClO4 and CF3COOAg have been measured in the concentration range (1-120) × 10-4 mol dm -3 in acetonitrile (AN) and binary mixtures of AN with n-butyronitrile (n-BTN) and DMA. The conductance data in all cases have been analyzed by the Shedlovsky method to evaluate Ao and KA of these electrolytes. Some of these salts are associated in these solvent systems. Ion-association in case of silver (I) salts is the largest and relatively more in case of AN + DMA mixtures. Limiting ion conductances (λ1o) and hence actual solvated radii (r i) in all solvent systems have been evaluated using a modified form of Stoke's law. Cu+, Ag+ and Na+ are highly solvated, CF3COO-, ClO4-, Br - and I- are poorly/moderately solvated and tetraalkylammonium ions (R4N+) and Ph4B - are not solvated in AN + n-BTN and AN + DMA mixtures. by Oldenbourg Wissenschaftsverlag.
Intramolecular Electron-Transfer Reactions in Bridged Polynuclear RuII-CoII Complexes Containing a (μ-Carboxylato)bis(μ-hydroxo)bis (and a RuII(NH3)5 Structural Unit
Neves, Ademir,Herrmann, Willy,Wieghardt, Karl
, p. 5532 - 5537 (1984)
Intramolecular electron transfer in RuII-L-CoIIIn trinuclear and pentanuclear complexes containing nicotinate, isonicotinate, pyrimidine-4-carboxylate, pyridine-2,6-dicarboxylate, and pyrazine-2,6-dicarboxylate anions as bridging ligands and N-coordinated RuII(NH3)5 units as internal reductants and (μ-carboxylato)bis(μ-hydroxo)bis moieties as oxidants has been studied.The nonbridging amines coordinated to cobalt(III) are three NH3, diethylenetriamine, or 1,4,7-triazacyclononane, respectively.A linear correlation (slope 0.46) of ΔG* vs. ΔG0 has been established for the intramolecular electron-transfer reactions with (NH3)6Co2(μ-OH)2 units as oxidants and RuII(NH3)5L as internal reductants.Variation of nonbridging amine ligands at the Co(III) centers affects the rate of intramolecular rate constants markedly.Reactivity differences are accounted for by differing driving force due to varying redox potentials of Co(III)/Co(II) couples.The rates of electron transfer were found to be rather intensitive to changes of the bridging ligand, which is taken as an indication that the reactions approach the adiabatic regime, although strongly negative entropies of activation (-10 to -18 cal K-1 mol-1) are observed for the series of complexes.
Self-assembled coordination thioether silver(I) macrocyclic complexes for homogeneous catalysis
Cao, Zhen,Lacoudre, Aline,Rossy, Cybille,Bibal, Brigitte
supporting information, p. 2465 - 2472 (2019/11/11)
The bis-ortho-thioether 9,10-bis[(o-methylthio)phenyl]anthracene was synthesized as a syn-atropisomer, as revealed by X-ray diffraction. This alkylaryl thioether ligand (L) formed different macrocyclic complexes by coordination with silver(I) salts depending on the nature of the anion: M2L2 for AgOTf and AgOTFA, M6L4 for AgNO3. A discrete M2L complex was obtained in the presence of bulky PPh3AgOTf. These silver(I) complexes adopted similar structures in solution and in the solid state. As each sulfur atom in the ligand is prochiral, macrocycles L2M2 were obtained as mixtures of diastereoisomers, depending on the configurations of the sulfur atoms coordinated to silver cations. The X-ray structures of the two L2·(AgOTf)2 stereoisomers highlighted their different geometry. The catalytic activity of all silver(I) complexes was effective under homogeneous conditions in two tandem addition/cycloisomerization of alkynes using 0.5-1 mol % of catalytic loading.
Self-assembly and characterization of three-dimensional silver(I) coordination polymers containing N,N,N′,N′-tetrakis(pyridin-4-yl) methanediamine
Shin, Jong Won,Min, Kil Sik
, p. 19 - 26 (2016/01/20)
Silver(I) coordination polymers, [Ag(tpmd)](NO3)·2CH3OH (1), [Ag(tpmd)](CF3SO3) (2), and [Ag(tpmd)] (CF3CO2)·0.5CH3OH (3), have been obtained by the self-assembly of AgX (X = NO3-, CF3SO3-, CF3CO2-) and N,N,N′,N′-tetrakis(pyridin-4-yl)methanediamine (tpmd) in MeOH/MeCN. The coordination geometries of silver(I) ions in 1 and 2 are distorted tetrahedral structures, while that of 3 is a distorted trigonal bipyramid. 1 and 2 feature three-dimensional coordination polymers formed by coordination of the silver(I) ions to the tpmd ligands. 3 shows two-dimensional network basically. However, the network of 3 can be considered three-dimensional structure by the weak axial bonding of the fourth pyridine group from another tpmd ligand. 1-3 display strong emissions at 331, 342, and 326 nm, respectively.