Sartzi, H., Miras, H. N. , Vila-Nadal, L. , Long, D. L. and Cronin, L. (2015) Trapping the δ isomer of the polyoxometalate-based Keggin cluster with a tripodal ligand. Angewandte Chemie (International Edition), 54(51), pp. 15488-15492. (doi: 10.1002/anie.201505377) (PMID:26511859)
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Abstract
We report the synthesis, structural, and electronic characterization of the theoretically predicted, but experimentally elusive δ-isomer of the Keggin polyanion. A family of δ-Keggin polyoxoanions of the general formula, (TEA)HpNaq [H2M12(XO4)O33(TEA)].rH2O where p, q, r = [2,3,8] for 1 and [4,1,4] for 2 were isolated by the reaction of tungstate(VI) and vanadium(V) with triethanolammonium ions (TEAH), acting as a tripodal ligand grafted to the surface of the cluster leading to the entrapment and stabilization of the elusive polyanhionic δ Keggin archetype. The δ-Keggin species were characterized by single-crystal X-ray diffraction, FT-IR, UV-vis, NMR and ESI-MS spectrometry. Electronic structure and structure-stability correlations were evaluated by means of DFT calculations. The compounds exhibited multi-electron transfer and reversible photochromic properties by undergoing single-crystal-to-single-crystal (SC-SC) transformations accompanied with colour changes under light
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Vila-Nadal, Dr Laia and Moiras, Professor Haralampos and Long, Dr Deliang and Cronin, Professor Lee |
| Authors: | Sartzi, H., Miras, H. N., Vila-Nadal, L., Long, D. L., and Cronin, L. |
| College/School: | College of Science and Engineering > School of Chemistry |
| Journal Name: | Angewandte Chemie (International Edition) |
| Publisher: | Wiley - V C H Verlag GmbH & Co. KGaA |
| ISSN: | 1433-7851 |
| ISSN (Online): | 1521-3773 |
| Copyright Holders: | Copyright © 2015 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim |
| First Published: | First published in Angewandte Chemie (International Edition) 54(51):15488-15492 |
| Publisher Policy: | Reproduced in accordance with the copyright policy of the publisher |
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