Facile synthesis of tetraaryl phosphonium ionic liquids

Authors

• Stephanie C. Jones, Southeastern Louisiana University
• Devin J. Schwaibold, Southeastern Louisiana University
• Grant Meadows, Southeastern Louisiana University
• Brennan Shuler, Eastern Kentucky University
• Richard E. Sykora, University of South Alabama
• Frank Rolf Fronczék, Louisiana State University
• James H. Davis, University of South Alabama
• Benjamin Wicker, Eastern Kentucky UniversityFollow

Author ORCID Identifier

Wicker, Benjamin/0000-0001-7108-8335

Department

Chemistry

Document Type

Article

Publication Date

Spring 3-24-2025

Abstract

The syntheses of triphenyl-2-pyridylphosphonium salts, [Mopyphos]A, where A-= BF4-, B(C6H5)4-, (CF3SO2)2N-, Sac-, and Ace-. (Sac-= saccharinate, Ace-= acesulfamate) are described. These salts can be synthesized on a multi-gram scale with good yields and have been characterized by NMR, single crystal XRD, and HRMS. Thermal analyses indicate that the bistriflimide (Tf2N-= (CF3SO2)2N-) salts are especially amenable towards high-temperature ionic liquid (IL) applications with decomposition temperatures above 450 degrees C. The synthetic methods described herein can be utilized to generate several phosphonium bistriflimide ILs of the general formula [(C6H5)3P-Ar]Tf2N, where Ar = N-heteroaryl).

Recommended Citation

Jones, Stephanie C.; Schwaibold, Devin J.; Meadows, Grant; Shuler, Brennan; Sykora, Richard E.; Fronczék, Frank Rolf; Davis, James H.; and Wicker, Benjamin, "Facile synthesis of tetraaryl phosphonium ionic liquids" (2025). EKU Faculty and Staff Scholarship. 792.
https://encompass.eku.edu/fs_research/792

Journal Title

Journal of Ionic Liquids