Pál D, Lacour J.
Pfeiffer effect on configurationally labile dyes within ternary complexes with metal ions and enantiopure macrocycles.
Dalton Trans 2024;
53:2665-2669. [PMID:
38224291 PMCID:
PMC10845008 DOI:
10.1039/d3dt04098d]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Accepted: 01/10/2024] [Indexed: 01/16/2024]
Abstract
A configurationally-labile helical dye, 2,4,5,7-tetranitrofluorenone oximate, is used to probe complexes made of enantiopure macrocycles and mono/divalent metal ions. Induced electronic circular dichroism (ECD) and 1H NMR responses are amplified at room temperature only in the presence of K+ and Na+ ions despite larger binding efficiency with alkaline earth metal ions.
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