Ionic liquids of superior thermal stability. Validation of PPh4+ as an organic cation of impressive thermodynamic durability

Ionic liquids of superior thermal stability. Validation of PPh4+ as an organic cation of impressive thermodynamic durability

Recent work by Wasserscheid, et al. suggests that PPh4+ is an organic molecular ion of truly exceptional thermal stability. Herein we provide data that cements that conclusion: specifically, we show that aliphatic moieties of modified PPh4+-based cations incorporating methyl, methylene, or methine C...

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Veröffentlicht in:RSC advances 2020-06, Vol.10 (35), p.20521-20528
Hauptverfasser: Soltani, Mohammad, McGeehee, Jimmie L, Stenson, Alexandra C, O'Brien, Richard A, Duranty, Edward R, Salter, E Alan, Wierzbicki, Andrzej, T Grant Glover, Davis, James H
Format: Artikel
Sprache:eng
Schlagworte:
Aliphatic compounds
Cations
Cements
Chemistry
Ionic liquids
Ions
Molecular ions
NMR
Nuclear magnetic resonance
Organic chemistry
Thermal stability
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Zusammenfassung:Recent work by Wasserscheid, et al. suggests that PPh4+ is an organic molecular ion of truly exceptional thermal stability. Herein we provide data that cements that conclusion: specifically, we show that aliphatic moieties of modified PPh4+-based cations incorporating methyl, methylene, or methine C–H bonds burn away at high temperatures in the presence of oxygen, forming CO, CO2, and water, leaving behind the parent ion PPh4+. The latter then undergoes no further reaction, at least below 425 °C.
ISSN:2046-2069
DOI:10.1039/d0ra03220d