Threading of various ‘U’ shaped bidentate axles into a heteroditopic macrocyclic wheel via NiII/CuII templation
| Autor: | Pradyut Ghosh, Bidyut Akhuli, Mandira Nandi, Saikat Santra |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
chemistry.chemical_classification
Denticity business.product_category 010405 organic chemistry Alkene Alkyne 010402 general chemistry 01 natural sciences 0104 chemical sciences Inorganic Chemistry chemistry.chemical_compound Crystallography chemistry Covalent bond Bromide Wheel and axle Azide business Ternary operation |
| Zdroj: | Dalton Transactions. 46:7421-7433 |
| ISSN: | 1477-9234 1477-9226 |
| DOI: | 10.1039/c7dt00699c |
| Popis: | The threading of ‘U’ shaped bent axles having diverse functionalities (Axle1–Axle10) is investigated by using a heteroditopic amido–amine macrocyclic (MC) wheel via NiII or CuII metal ion templation. These bent shaped axles are the derivatives of 4,4′-substituted 2,2′-bipyridine, which are composed of various terminal groups like alkene, alkyne, bromide, hydroxyl and azide. Such metallo [2]pseudorotaxanes are well characterised by ESI-MS, EPR and FT-IR spectroscopic studies, UV-Vis absorption studies, elemental analysis and single-crystal X-ray diffraction studies wherever possible. Experimental evidence supports 1 : 1 : 1 ternary complexation between MC, the metal ion and axle. The single crystal X-ray structures of three CuII templated ternary complexes (PR1′, PR3′ and PR7′) show the penta-coordination arrangement around the templating metal ion. Interestingly, judicious selection of chemical functionalities in the complementary wheel and axle components enables to show the existence of various covalent and non-covalent interactions. |
| Databáze: | OpenAIRE |
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