The Effect of the Counter Anion on the Complexation of Alkali Metal Salts to Polyethylene Glycol

R. Neumann, S. Dermeik, Y. Sasson*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

The complexation of alkali metal salts by polyethylene glycol is strongly dependent on the counter anion of the salt. In general, potassium salts are more easily complexed. In fact, sodium salts at low free energy of formation are barely complexed at all. By conductometric and index of refraction measurements it was shown that anions capable of hydrogen bonding such as OH, F, HSO4 and HCO3 were ion paired to the complexed potassium cation and existed as relatively “naked” anions. Other anions such as Cl, Br, I, SCN, NO3, NO2 AND HF2 existed as disassociated anions with significant solvation shells. The use of polyethylene glycol as a phase transfer catalyst considering the results found is discussed.

Original languageEnglish
Pages (from-to)239-242
Number of pages4
JournalIsrael Journal of Chemistry
Volume26
Issue number3
DOIs
StatePublished - 1985

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