Synthesis and characterization data of monocationic and dicationic ionic liquids or molten salts

Montalbán, Mercedes G.; Víllora, Gloria; Licence, Peter

doi:10.1016/j.dib.2018.05.080

Cited by 13 publications

(13 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…DILs and reference DTs and TILs were synthesized following literature methods . Their spectral data (Tables 2 and 3) were in accordance with those reported in the literature . BMImBr and BzMImCl were purchased from Iolitec and used after being kept at reduced pressure at 70 °C for 24 h. BzMImBr was obtained from BzMImCl using an ion exchange resin (Amberlite® IRA‐400 chloride form) pre‐treated with NaBr .…”

Section: Methodsmentioning

confidence: 88%

“…[58][59] Their spectral data (Tables 2 and 3) were in accordance with those reported in the literature. [60] BMImBr and BzMImCl were purchased from Iolitec and used after being kept at reduced pressure at 70°C for 24 h. BzMImBr was obtained from BzMImCl using an ion exchange resin (Amberlite® IRA-400 chloride form) pre-treated with NaBr. [61] The resulting white solid was kept at reduced pressure at 70°C for 24 h.…”

Section: Experimental Section Materialsmentioning

confidence: 99%

See 1 more Smart Citation

Cathodic Behaviour of Dicationic Imidazolium Bromides: The Role of the Spacer

et al. 2019

View full text Add to dashboard Cite

The cathodic reduction of dicationic imidazolium bromides, whose spacer is either an aliphatic chain or a xylyl group, leads to the formation of the corresponding N‐heterocyclic carbenes (NHCs), which were isolated as the corresponding thiones, after reaction with elemental sulfur. The behaviour of the dications was compared with the corresponding monocations. The behaviour of dicarbenes depends on the nature of the spacer. This study evidenced that dicarbenes deriving from xylyl dications are less stable than the corresponding aliphatic ones (giving lower yields in thiones), due to a debenzylation reaction. On the other hand, the yields in thiones starting from aliphatic dications are higher than the corresponding monocations, suggesting a cooperative reduction at the electrode of the two imidazolium moieties. The cathodic process was confirmed using the co‐electrogenerated hydrogen to reduce 2,2,2‐trifluoroacetophenone to the corresponding alcohol.

show abstract

Section: Methodsmentioning

confidence: 88%

Section: Experimental Section Materialsmentioning

confidence: 99%

Cathodic Behaviour of Dicationic Imidazolium Bromides: The Role of the Spacer

et al. 2019

View full text Add to dashboard Cite

show abstract

“…A full description of each chemical synthesis is provided in Montalbán et al, 2017. Full characterization data of all the compounds, including 1 H NMR, 13 C NMR and 19 F NMR spectroscopy and mass spectrometry (MS), are also provided in Montalbán et al, 2017. Melting point temperature or thermal decomposition temperature of the solid ILs at room temperature was measured and included in Montalbán et al, 2017 (see Table 2).…”

Section: Synthesis and Characterizationmentioning

confidence: 99%

“…The main goal of this work was to measure the aquatic toxicity of a set of twenty-six imidazolium, pyrrolidinium and pyridinium-based ILs (9 monocationic and 17 dicationic) (see Table 1 in Montalbán et al, 2017) using the Vibrio fischeri inhibition test as the effective nominal EC50 concentration (concentration necessary to decrease 50% of luminescence produced by the bacteria population). To date, the synthesis of some of these compounds has not been reported and hence no report in the literature has studied the toxicity of the most of these ILs (22 out of 26) towards Vibrio fischeri.…”

Section: Introductionmentioning

confidence: 99%

Ecotoxicity assessment of dicationic versus monocationic ionic liquids as a more environmentally friendly alternative

Montalbán

Víllora

Licence

2018

Ecotoxicology and Environmental Safety

Self Cite

View full text Add to dashboard Cite

One of the reasons why ionic liquids have received growing interest from researchers is their environmentally interesting characteristics, such as their negligible vapour pressure and their good chemical and thermal properties. In particular, dicationic ionic liquids whose thermal and electrochemical stability is higher than that of monocationic ionic liquids have begun to gain attention during recent years. In this work, monocationic and dicationic ionic liquids were synthesized, characterized and tested for their toxicity, which was assessed using the luminescent bacterium Vibrio fischeri. The results revealed that the toxicity of the ionic liquids mainly depends on the head groups and linkage chain length of their cationic structure. Introduction of a new cationic head decreased the EC (concentration which leads to 50% reduction in bioluminescence of the bacteria) of the ionic liquids. The results present a promising picture of dicationic ionic liquids as alternatives with lower environmental impact than their monocationic counterparts and underline the significance of designing particular structures for ionic liquids.

show abstract

“…[5][6][7][8] Recently, dicationic ionic liquids (DILs) that are composed of two mono-cations have been reported. [9][10][11][12] DILs have been clas-sied as symmetrical DILs (two mono-cations are identical) and unsymmetrical DILs (two mono-cations are different). In particular, imidazolium and pyridinium based DILs have shown greater promising physicochemical properties.…”

Section: Introductionmentioning

confidence: 99%