123rd General Meeting of the KCS

Type Poster Presentation
Area Organic Chemistry
Room No. Exhibition Hall 2
Time 4월 18일 (목요일) 11:00~12:30
Code ORGN.P-159
Subject Phenanthroline-Strapped Calix[4]pyrroles as Highly Selective Receptors for the Bicarbonate Anion and the Lithium Chloride Ion Pair
Authors Juhyun Oh, Sung Kuk Kim*
Department of Chemistry, Gyeongsang National University, Korea
Abstract Calix[4]pyrroles strapped with phenanthroline via the ester and amide linkages have been synthesized. 1H NMR spectroscopic analyses and single crystal X-ray diffraction analysis of the receptor with the ester linkages revealed that it was able to bind LiCl with high affinity and selectively and therefore to extract LiCl in solution as well as in the solid state. In this case, the lithium cation is bound to the nitrogen atoms of the phenanthroline and one of the oxygen atoms of the ester linkage while the chloride anion is hydrogen bonded to the NHs of the calix[4]pyrrole. On the other hand, the receptor having the amide linkages was found to bind the bicarbonate anion highly selectively over other anions including halides, the hydrogen phosphate, sulfate, and pyrophosphate. This high selectively is attributable to the participation of the nitrogen atoms of the phenanthroline in the hydrogen bond with the bicarbonate anion.
E-mail 2016210110@gnu.ac.kr