Lanthanoid Complexation by a Tris-Tetrazole-Functionalised Calix[4]arene
The synthesis and characterization of 5,11,17,23-tetra-tert-butyl-25-hydroxy-26,27,28-tris(tetrazol-5-ylmethoxy)calix[4]arene is reported. Purification of the macrocycle required the use of preparative HPLC techniques. The macrocycle was found to be a poorer ligand for complexation of lanthanoid cat...
| Main Authors: | , , , , , , |
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| Format: | Journal Article |
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Wiley - V C H Verlag GmbH
2016
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| Online Access: | 833 http://hdl.handle.net/20.500.11937/44728 |
| _version_ | 1848757085030842368 |
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| author | D'Alessio, D. Skelton, B. Sobolev, A. Krause-Heuer, A. Fraser, B. Massi, Massimiliano Ogden, Mark |
| author_facet | D'Alessio, D. Skelton, B. Sobolev, A. Krause-Heuer, A. Fraser, B. Massi, Massimiliano Ogden, Mark |
| author_sort | D'Alessio, D. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The synthesis and characterization of 5,11,17,23-tetra-tert-butyl-25-hydroxy-26,27,28-tris(tetrazol-5-ylmethoxy)calix[4]arene is reported. Purification of the macrocycle required the use of preparative HPLC techniques. The macrocycle was found to be a poorer ligand for complexation of lanthanoid cations than the bis(tetrazole) analogue, but somewhat more effective than the tetrakis(tetrazole)-substituted derivative. Two metal complexes of the tris(tetrazole)-calixarene were structurally characterised. A polymeric sodium salt of the tris(tetrazole)-calixarene was isolated from a solution containing yttrium and a sodium acetate buffer. A praseodymium complex was isolated in the presence of an ammonium acetate buffer, where the calixarene acts as a unidentate ligand, bound to the metal atom through one tetrazole N-atom. Increasing the amount of buffer resulted in the crystallisation of a metal-free ammonium salt of the calixarene. |
| first_indexed | 2025-11-14T09:22:29Z |
| format | Journal Article |
| id | curtin-20.500.11937-44728 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:22:29Z |
| publishDate | 2016 |
| publisher | Wiley - V C H Verlag GmbH |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-447282019-02-19T05:35:12Z Lanthanoid Complexation by a Tris-Tetrazole-Functionalised Calix[4]arene D'Alessio, D. Skelton, B. Sobolev, A. Krause-Heuer, A. Fraser, B. Massi, Massimiliano Ogden, Mark The synthesis and characterization of 5,11,17,23-tetra-tert-butyl-25-hydroxy-26,27,28-tris(tetrazol-5-ylmethoxy)calix[4]arene is reported. Purification of the macrocycle required the use of preparative HPLC techniques. The macrocycle was found to be a poorer ligand for complexation of lanthanoid cations than the bis(tetrazole) analogue, but somewhat more effective than the tetrakis(tetrazole)-substituted derivative. Two metal complexes of the tris(tetrazole)-calixarene were structurally characterised. A polymeric sodium salt of the tris(tetrazole)-calixarene was isolated from a solution containing yttrium and a sodium acetate buffer. A praseodymium complex was isolated in the presence of an ammonium acetate buffer, where the calixarene acts as a unidentate ligand, bound to the metal atom through one tetrazole N-atom. Increasing the amount of buffer resulted in the crystallisation of a metal-free ammonium salt of the calixarene. 2016 Journal Article http://hdl.handle.net/20.500.11937/44728 10.1002/ejic.201600938 833 Wiley - V C H Verlag GmbH fulltext |
| spellingShingle | D'Alessio, D. Skelton, B. Sobolev, A. Krause-Heuer, A. Fraser, B. Massi, Massimiliano Ogden, Mark Lanthanoid Complexation by a Tris-Tetrazole-Functionalised Calix[4]arene |
| title | Lanthanoid Complexation by a Tris-Tetrazole-Functionalised Calix[4]arene |
| title_full | Lanthanoid Complexation by a Tris-Tetrazole-Functionalised Calix[4]arene |
| title_fullStr | Lanthanoid Complexation by a Tris-Tetrazole-Functionalised Calix[4]arene |
| title_full_unstemmed | Lanthanoid Complexation by a Tris-Tetrazole-Functionalised Calix[4]arene |
| title_short | Lanthanoid Complexation by a Tris-Tetrazole-Functionalised Calix[4]arene |
| title_sort | lanthanoid complexation by a tris-tetrazole-functionalised calix[4]arene |
| url | 833 http://hdl.handle.net/20.500.11937/44728 |