Crystal structures of hydrated rare-earth bis(trifluoromethylsulfonyl)imide salts

Abstract

Structural characterisation of the full range of hydrated rare-earth bis(trifluoromethylsulfonyl)imide salts showed the structures to be [Sc(H2O)7][Tf2N]3·H2O, Ln(H2O)3(Tf2N)3, Ln(H2O)3(Tf2N)3 or [Ln(H2O)x][Tf2N]3.

Electrodeposition of neodymium and dysprosium from organic electrolytes

“…The obtained deposits are characterized by scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), and X-ray photoelectron spectroscopy (XPS). We also report a bistriflimide-free electrolyte for the electrodeposition of neodymium, consisting of the adduct Nd 2 Cl 6 (DME) 4 41 sodium bis (trifluoromethylsulfonyl)imide (NaTf 2 N) 42 and the dimethoxyethane adduct of neodymium(III) chloride (Nd 2 Cl 6 (DME) 4 ) 43 were synthesized according to previously reported procedures. All the chemicals were used as received without any further purification, with the exception of the bis(trifluoromethylsulfonyl)imide salts, BMPTf 2 N, and Nd 2 Cl 6 (DME) 4 which were dried prior to use on a Schlenk line for 12 hours at 220 1C, 120 1C, and ambient temperature, respectively.…”

Highly Efficient Extraction of Trivalent f‐Cations Using Several N‐Pivot Tripodal Diglycolamide Ligands in an Ionic Liquid: The Role of Ligand Structure on Metal Ion Complexation

“…The EXAFS studies of the extracted metal ligand complex in C 4 mim · NTf 2 ionic liquid were done at the Eu L3‐edge. The scattering path for different scatterer were generated using crystal structure of Ln(H 2 O) 3 (NTf 2 ) 3 and Eu(TMDGA) 3 · (ClO4) 3 coordinates , …”

Flowsheet Simulation of Cobalt–Nickel Separation by Solvent Extraction with Trihexyl(tetradecyl)phosphonium Chloride

“…The distribution of cobalt from chloride solutions to the ionic liquid [P 66614 ]Cl is sensitive to the concentration of chloride. 22,27 In several published studies, 18,20,22,25,27 HCl is used to control the concentration of chloride in the aqueous phase. However, HCl is also extracted by [P 66614 ]Cl; 22,27 therefore a distribution coefficient model for HCl is essential.…”

“…By an anion exchange process, [P 66614 ]Cl can be easily modified, to replace its anion to synthesize other trihexyl(tetradecyl)phosphonium ionic liquids; these can be used in other metal separation processes, such as for separation of mixtures of rare earths. 24,25 Although the viscosity of pure [P 66614 ]Cl is high, it reduces significantly with increasing temperature and increasing water content. 26 Solvent extractions typically involve an aqueous phase and a solvent phase; therefore, the ionic liquid solution is always saturated with water.…”