Ion pair cooperative binding of potassium salts by new rhenium(I) bipyridine crown ether receptors.
The new rhenium(I) bipyridine crown ether receptors 1-4 have been prepared and their ion pair recognition properties examined. The crystal structure of [1.KCl](2).2H(2)O demonstrates that potassium is coordinated by benzo-18-crown-6 and chloride is hydrogen bonded to the amide groups. Receptor 3 ext...
| Main Authors: | , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
2001
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| _version_ | 1797055857098227712 |
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| author | Uppadine, L Redman, J Dent, S Drew, MG Beer, P |
| author_facet | Uppadine, L Redman, J Dent, S Drew, MG Beer, P |
| author_sort | Uppadine, L |
| collection | OXFORD |
| description | The new rhenium(I) bipyridine crown ether receptors 1-4 have been prepared and their ion pair recognition properties examined. The crystal structure of [1.KCl](2).2H(2)O demonstrates that potassium is coordinated by benzo-18-crown-6 and chloride is hydrogen bonded to the amide groups. Receptor 3 extracts solid KCl and KOAc into chloroform via ion pair complexation. NMR and emission titration studies with receptors 1-4 and KCl/KOAc show that cobound potassium enhances anion binding strength by electrostatic and conformational effects. Significant cooperative interactions are observed between the anion and cation sites for host 4 in CH(3)CN. This molecule coordinates potassium to form a 1:1 intramolecular sandwich complex, which preorganizes the host for acetate binding. |
| first_indexed | 2024-03-06T19:15:15Z |
| format | Journal article |
| id | oxford-uuid:181e5c78-ae1a-4202-b514-e3237c840228 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T19:15:15Z |
| publishDate | 2001 |
| record_format | dspace |
| spelling | oxford-uuid:181e5c78-ae1a-4202-b514-e3237c8402282022-03-26T10:41:36ZIon pair cooperative binding of potassium salts by new rhenium(I) bipyridine crown ether receptors.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:181e5c78-ae1a-4202-b514-e3237c840228EnglishSymplectic Elements at Oxford2001Uppadine, LRedman, JDent, SDrew, MGBeer, PThe new rhenium(I) bipyridine crown ether receptors 1-4 have been prepared and their ion pair recognition properties examined. The crystal structure of [1.KCl](2).2H(2)O demonstrates that potassium is coordinated by benzo-18-crown-6 and chloride is hydrogen bonded to the amide groups. Receptor 3 extracts solid KCl and KOAc into chloroform via ion pair complexation. NMR and emission titration studies with receptors 1-4 and KCl/KOAc show that cobound potassium enhances anion binding strength by electrostatic and conformational effects. Significant cooperative interactions are observed between the anion and cation sites for host 4 in CH(3)CN. This molecule coordinates potassium to form a 1:1 intramolecular sandwich complex, which preorganizes the host for acetate binding. |
| spellingShingle | Uppadine, L Redman, J Dent, S Drew, MG Beer, P Ion pair cooperative binding of potassium salts by new rhenium(I) bipyridine crown ether receptors. |
| title | Ion pair cooperative binding of potassium salts by new rhenium(I) bipyridine crown ether receptors. |
| title_full | Ion pair cooperative binding of potassium salts by new rhenium(I) bipyridine crown ether receptors. |
| title_fullStr | Ion pair cooperative binding of potassium salts by new rhenium(I) bipyridine crown ether receptors. |
| title_full_unstemmed | Ion pair cooperative binding of potassium salts by new rhenium(I) bipyridine crown ether receptors. |
| title_short | Ion pair cooperative binding of potassium salts by new rhenium(I) bipyridine crown ether receptors. |
| title_sort | ion pair cooperative binding of potassium salts by new rhenium i bipyridine crown ether receptors |
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