Isabel N. Hegarty
Unexpected linkage isomerism in chiral tetranuclear bis-tridentate (1,2,3-triazol-4-yl)-picolinamide (tzpa) grids
Hegarty, Isabel N.; Dalton, Hannah L.; Henwood, Adam F.; Hawes, Chris S.; Gunnlaugsson, Thorfinnur
Abstract
The synthesis of a chiral bis-tridentate (1,2,3-triazol-4-yl)-picolinamide (tzpa) ligand is described and its coordination chemistry with Cu(NO3)2 and [Cu(MeCN)4]PF6 is explored in the crystalline phase as well as in solution. Chiral [2 × 2] tetranuclear square grid complexes [Cu4(H21)4](NO3)8 and [Cu4(H1)4](PF6)4 were observed, and crystallographically analysed, these being linkage isomers with N4O2 and N5O coordination spheres, respectively. These come about by an unusual in situ amide deprotonation and coordination, which accompanies a CuI ? CuII oxidation process.
Acceptance Date | Jul 15, 2019 |
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Publication Date | Aug 18, 2019 |
Journal | Chemical Communications |
Print ISSN | 1359-7345 |
Publisher | Royal Society of Chemistry |
Pages | 9523-9526 |
DOI | https://doi.org/10.1039/c9cc03316e |
Publisher URL | http://doi.org/10.1039/c9cc03316e |
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Publisher Licence URL
https://creativecommons.org/licenses/by-nc/4.0/
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