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Dicarboxylic Acid Separation by Dynamic and Size‐Matched Recognition in Solution and in the Solid State |
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| Authors: | Dr. Vijith Kumar Dr. Tullio Pilati Prof. Dr. Giancarlo Terraneo Dr. Gianluca Ciancaleoni Prof. Dr. Alceo Macchioni Prof. Dr. Giuseppe Resnati Prof. Dr. Pierangelo Metrangolo |
| Affiliation: | 1. DCMIC “Giulio Natta”, Politecnico di Milano, Milano, Italy;2. Dip. Chimica e Chimica Industriale, Università degli Studi di Pisa, Pisa, Italy;3. Dipartimento di Chimica, Biologia e Biotecnologie and CIRCC, Università degli Studi, Perugia, Italy |
| Abstract: | Bis(trimethylammonium) alkane diiodides dynamically encapsulate dicarboxylic acids through intermolecular hydrogen bonds between the I? anions of the hosts and the carboxylic OH groups of the guests. A selective recognition is realized when the size of the I????HOOC(CH2/CF2)nCOOH???I? superanion matches the dication alkyl chain length. Dynamic recognition is also demonstrated in solution, where the presence of the size‐matching organic salt boosts the acid solubility profile, thus allowing efficient mixture separation. |
| Keywords: | co-crystals dicarboxylic acids halogen bonds hydrogen bonds separation |