Squaramide-based tripodal receptors for selective recognition of sulfate anion

[摘要]：Squaramide-based tripodal anion receptors 1-3 have been prepared and their anion binding properties with various inorganic anions were investigated. Receptor 1 formed a dimeric complex in solid state and a 1:1 complex in solution with SO42-. All receptors 1-3 could selectively encapsulate SO42- via hydrogen bonds over other examined anions.

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