Anion complexation properties of 2,2′-bisamidodipyrrolylmethanes†
Abstract
Two new bis-amido dipyrrolylmethanes (bis-N-butylamide-5,5′-methylenebis(4-ethyl-3-methyl-2-pyrrolecarboxylate)
1 and bis-N-phenylamide-5,5′-methylenebis(4-ethyl-3-methyl-2-pyrrolecarboxylate)
2 have been synthesised and shown to exhibit selectivity for oxo-anions from among a variety of putative anionic guest species in