Journal
DALTON TRANSACTIONS
Volume 46, Issue 39, Pages 13376-13385Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7dt02832f
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Funding
- European Research Council (European Union's 7th Framework programme, ERC) [267426]
- University of Oxford
- European Research Council (ERC) [267426] Funding Source: European Research Council (ERC)
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Neutral heteroditopic [2] rotaxane ion-pair host systems were synthesised via a Cu(II) directed passive metal template strategy. Each rotaxane contains discrete, axle-separated interlocked binding sites for a guest anion and a transition metal countercation. The anion binding sites are composed of convergent X-H (X = C, N) hydrogen bond donor groups, or mixed X-H and C-I hydrogen and halogen bond donor groups, whereas an equivalent three-dimensional array of amine, pyridine and carbonyl oxygen donor groups comprise the transition metal binding site. H-1 NMR titrations experiments in CDCl3/CD3OD or CDCl3/CD3OD/D2O solvent mixtures reveal that the heteroditopic [2] rotaxane host systems are capable of cooperative anion recognition in the presence of a co-bound Zn(II) cation.
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