Heteroleptic silver-containing ionic liquids

Abstract

MethodsAll chemicals purchased were of reagent grade and used without further purification.[Ag(MeCN)][Tf 2 N] was synthesised as previously described [S1]. TGA studies were performed on a TA instruments Q600 thermogravimeter. The temperature was scanned from room temperature up to 400 °C at a heating rate of 5 °C per minute. Elemental analyses (C, H, N) were carried out using a CE Instruments EA-1110 elemental analyser. The IR and Raman spectra were recorded on a Bruker Vertex 70 FTIR spectrometer, coupled with a Ram II Raman module, at a resolution of 4 cm -1 . Melting points were determined on a Mettler-Toledo 822 DSC instrument at a heating rate of 10 °C per minute. Viscosities have been measured on a Brookfield cone plate viscosimeter (LVDV-II + Programmable Viscometer) with a cone spindle CPE-40. The ionic liquid was kept under a dry nitrogen atmosphere during the measurement and the temperature of the sample was controlled by a circulating water bath.The morphology and elemental composition of the silver deposits were determined by scanning electron microscopy (SEM) and energy-dispersive X-ray analysis (EDX) (Philips XL 30 FEG) and atomic force microscopy (AFM) (Digital Instruments Nanoscope III AFM).The electrochemical experiments were performed in an argon filled glove box with O 2 and H 2 O concentrations below 1 ppm. Gold-covered silicon wafers have been used as the substrates for electrodeposition. In order to make the current density uniform across the whole electrode area, the electrode was recessed by placing it inside a PTFE-sample holder, whichElectronic Supplementary Material (ESI) for Dalton Transactions This journal is

Liquid Nickel Salts: Synthesis, Crystal Structure Determination, and Electrochemical Synthesis of Nickel Nanoparticles

“…[8][9][10][11][12][13] Several examples of electrodepositiono fm etals from liquid metal salts can be found in the literature. [14][15][16][17][18][19][20][21][22] Our research group has obtainedv ery promising resultsf or the electrodeposition of copper, [23][24][25] silver, [26][27][28][29][30] palladium [31] and lithium. [32] Metal coatings of ag ood quality were achieved at very high current densities,e ven withoutt he use of additives.…”

Structures and Electronic Properties of Transition Metal-Containing Ionic Liquids: Insights from Ion Pairs

“…Moreover, in the ion pairs containing silver, the anion is involved in several HBs with the H atoms from both imidazole rings, in line with the X-ray structure of corresponding ILs. 22 As expected, relative to [Ag(mim) 2 ][Tf 2 N], more conformers were attained for the ion pairs [(C 2 im)Ag(mim)][Tf 2 N] and [(C 4 im)Ag(mim)][Tf 2 N], due to two different alkylimidazole ligands coordinated to silver center in the latter systems. In addition, all the N···H(C2) distances in the ion pairs containing silver are predicted longer than those in [C 1 mim][Tf 2 N], which implies weaker N··· H(C2) HBs in these ion pairs (see below).…”

“…The crystal structures and physicochemical properties of these TM-ILs have been reported in previous papers. 21,22,26,27 In addition, two conventional ILs, [C 1 mim][Tf 2 N] and [C 1 mim][BF 4 ], were also chosen for comparison. First, all possible conformations of the ion pairs for the studied TM-ILs were simulated, and different molecular interactions, such as hydrogen bonds (HBs) and electrostatic forces, between the cations and anions were examined.…”

Exploring silver ionic liquids for reaction-based gas sensing on a quartz crystal microbalance

“…Recently, Binnemans and Fransaer, [1][2][3][4] Huang and Dai 5 and their co-workers have demonstrated that silver ionic liquids, for example, are superior electrolytes for the electrodeposition of metallic silver with high current density. These metal ionic liquids possess advantages such as high solubility of metal salts and strong response to magnetic fields that much outperform common organic ionic liquids.…”