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인용수 2
·2024
An Ion Pair Receptor for Selective Solid‐Liquid Extraction of LiCl
Ju Hyun Oh, MinJoong Kim, Jaewon Choi, Hyun Su Jeong, Sung Kuk Kim
IF 3.7Chemistry - A European Journal
초록

We have synthesized a new ion pair receptor (2) consisting of a cone-calix[4]arene bearing a combination of ethyl esters and ethers as a cation binding site and a calix[4]pyrrole subunit acting as an anion binding site. Ion pair receptor 2 complexes LiCl, NaCl, and CsCl among alkali metal chloride salts with distinct complexation modes and affinities in 10 % methanol-d<sub>4</sub> in chloroform-d. For instance, relatively small Li<sup>+</sup> and Na<sup>+</sup> cations are bound to the oxygen atoms of the functionalized calix[4]arene lower rim with Cl<sup>-</sup> being hydrogen bonded to the calix[4]pyrrole NHs while the larger Cs<sup>+</sup> cation is bound to the cone-shaped calix[4]pyrrole cavity via a π-cation interaction. By contrast, in the co-presence of all MCl salts (M=Li, Na, K, Rb, and Cs), receptor 2 binds LiCl with complete selectivity. Besides, receptor 2 is capable of extracting LiCl selectively into a chloroform or a dichloromethane organic phase from its solid source containing all other MCl salts.

키워드
ChemistryChloroformDichloromethaneAlkali metalPyrroleCalixareneInorganic chemistryExtraction (chemistry)ChlorideMedicinal chemistry
타입
article
IF / 인용수
3.7 / 2
게재 연도
2024

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