Syntheses and Physicochemical Properties of New Ionic Liquids Based on the Hexafluorouranate Anion

Abstract

The first syntheses of a series of ionic liquids based on the hexafluorouranate(V) anion are described along with their physicochemical and electrochemical properties. The green room-temperature ionic liquid, 1-ethyl-3-methylimidazolium hexafluorouranate (EMImUF6), exhibits a conductivity of 7.9 mS cm−1, viscosity of 59 cP, and electrochemical window of 2.3 V at 298 K.

Comprehensive Conformational and Rotational Analyses of the Butyl Group in Cyclic Cations: DFT Calculations for Imidazolium, Pyridinium, Pyrrolidinium, and Piperidinium

“…UF 6 (green) and Cl salts (black). Reprinted with permission from ref , Copyright 2009 The Chemical Society of Japan.…”

“…However, such data are currently unavailable. Therefore, here we use one Raman spectrum of [C 4 pyri] + paired with Cl anion 58 (Figure 10b) for a rough validation. First, in the observed spectrum, there is no strong peak around 900 cm −1 , which could exclude the possibility of tt and tg.…”

Fluorohydrogenate Ionic Liquids, Liquid Crystals, and Plastic Crystals

“…Fluorohydrogenate ionic liquids work as a Lewis base when they are reacted with a fluoride (or oxidefluoride) which acts as a stronger Lewis acid than HF to liberate HF from (FH) n F − [69][70][71][72][73]. The following is the example of this reaction:…”

Iron Fluoroanions and Their Clusters by Electrospray Ionization of a Fluorinating Ionic Liquid

“…For example, fluoroanions can be used to probe new bonding motifs in organometallic complexes, involving metals that include B [1], Co [2][3][4][5][6], Ga [7], As [1], Cd [8], Pd [9], In [7], Sn [10], and U [11]. One of the most intriguing properties of fluoroanion-containing materials is the ability to solvate HF, which has the potential to provide improved safety and efficiency for synthetic chemistry [7,[11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28]. For example, anhydrous HF-containing systems have great utility for synthesis of high oxidation state fluoroanions, such as [AgF 4 ]…”