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Synthesis of Oxygen-Containing Spirobipyrrolidinium Salts for High Conductivity Room Temperature Ionic Liquids

✍ Scribed by Seiichiro Higashiya; Thamarai Selvi Devarajan; Manisha V. Rane-Fondacaro; Christopher Dangler; Jeremy Snyder; Pradeep Haldar

Publisher
John Wiley and Sons
Year
2009
Tongue
German
Weight
203 KB
Volume
92
Category
Article
ISSN
0018-019X

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✦ Synopsis

Synthesis of ionic liquids (IL) based on oxygen-containing spirobipyrrolidinium salts with BF 4 , BF 3 C 2 F 5 , and NTf 2 as counterions was undertaken. Their physical and electrochemical properties were evaluated for suitability for Room Temperature Ionic Liquids (RTIL) application. Reduction in melting point occurred upon exchange of C( 2) by an O-atom of spirobipyrrolidinium, without sacrificing the electrochemical stability; while introduction of alkyl groups between the N-and O-atoms led to incorporation of asymmetry, and hence reduced the melting points, and viscosity.

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