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Phase behaviour and heat capacities of 1-butyl-1-methylpyrrolidinium-based ionic liquids with fluoro-sulfonate anions

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F22%3A43924288" target="_blank" >RIV/60461373:22340/22:43924288 - isvavai.cz</a>

  • Result on the web

    <a href="https://doi.org/10.1016/j.jil.2021.100016" target="_blank" >https://doi.org/10.1016/j.jil.2021.100016</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1016/j.jil.2021.100016" target="_blank" >10.1016/j.jil.2021.100016</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Phase behaviour and heat capacities of 1-butyl-1-methylpyrrolidinium-based ionic liquids with fluoro-sulfonate anions

  • Original language description

    yrrolidinium-based ionic liquids belong to the relatively common classes of these compounds; however, there are serious gaps in the knowledge and interpretation flaws of their physico-chemical properties, except for those containing the archetypal bistriflimide [NTf2] anion. Compounds combining the 1-butyl-1-methylpyrrolidinium cation [C4C1Pyrr] with various fluorinated sulfonate anions exhibit vast polymorphism, rendering the thermodynamic description even more complicated. Four 1-butyl-1-methylpyrrolidinium ionic liquids, available commercially in high purities, were subjugated to a combined calorimetric and crystallographic study with a special emphasis on establishing a complete interpretation of their phase behaviour.The samples were dried by vacuum heating and their purity was verified using the Karl Fischer titration and van&apos;t Hoff analysis of the melting peaks. Polymorphism was readily detected for all four compounds, but a complete description of their phase behaviour required an intensive and careful labour. Despite our experimental efforts, some of the polymorphs were found to be too elusive for a complete characterization by any of the used techniques. The obtained phase-transition temperatures and enthalpies were critically compared to the available literature with a variable agreement. While the existing thermodynamic data for [C4C1Pyrr][NTf2] were found complete and sensible, literature data for the other compounds were incomplete or ambiguous. Heat capacities of the four compounds were determined using a Tian-Calvet calorimeter, the results of which were in a good agreement with the existing adiabatic-calorimetric data for [C4C1Pyrr][NTf2]. Several crystal structures were newly resolved within the phase behaviour study and they are reported in the paper.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>ost</sub> - Miscellaneous article in a specialist periodical

  • CEP classification

  • OECD FORD branch

    10403 - Physical chemistry

Result continuities

  • Project

    <a href="/en/project/GJ19-04150Y" target="_blank" >GJ19-04150Y: Cohesive properties and phase equilibria of ionic liquids investigated by state of the art calculations and experiments</a><br>

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2022

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Journal of Ionic Liquids

  • ISSN

    2772-4220

  • e-ISSN

  • Volume of the periodical

    2

  • Issue of the periodical within the volume

    1

  • Country of publishing house

    NL - THE KINGDOM OF THE NETHERLANDS

  • Number of pages

    15

  • Pages from-to

    100016

  • UT code for WoS article

  • EID of the result in the Scopus database