Abstract
Osmotic and activity coefficients, determined from isopiestic measurements, are presented for aqueous solutions of eight tetramethylguanidinium salts. It is proposed that both hydronium and tetramethylguanidinium ions are capable of forming stable ion pairs with many anions by means of bridged hydrogens forming six-membered rings and that these ion pairs are stable in rather dilute aqueous solutions.
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Bonner, O.D. Unusual ion pairs and their relationship to acid ionization. J Solution Chem 9, 877–884 (1980). https://doi.org/10.1007/BF00668000
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DOI: https://doi.org/10.1007/BF00668000