Tungsten Biscorroles: New Chiral Sandwich Compounds
Abstract
Abstract The oxidative metalation method, involving the interaction of free‐base meso ‐triarylcorroles and W(CO) 6 in refluxing decalin, led to a set of three tungsten(VI) biscorroles, the first homoleptic sandwich compounds involving corroles. Single‐crystal X‐ray structures of two of the complexes revealed square‐antiprismatic coordination and strongly domed corroles with long W−N distances of 2.15–2.22 Å and a substantial displacement of ∼1.17 Å of the metal relative to the mean N 4 planes of the ligands. The structures correspond to approximate C 2 symmetry and are thus chiral. DFT calculations strongly indicate that the enantiomers are configurationally stable and hence amenable to chiral resolution. Their other notable properties include a strongly blueshifted Soret band at (357±2) nm, a relatively intense π→W(d ) near‐IR feature at (781±3) nm, and a low electrochemical HOMO–LUMO gap of approximately 1.3 V. The results obtained herein suggest that metallobiscorroles may emerge as a new class of inherently chiral chromophores with novel optical and electrochemical properties.
- Authors:
-
- Department of Chemistry UiT - The Arctic University of Norway 9037 Tromsø Norway
- Advanced Light Source Lawrence Berkeley National Laboratory Berkeley CA 94720-8229 USA
- Publication Date:
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1401429
- Grant/Contract Number:
- AC02-05CH11231
- Resource Type:
- Publisher's Accepted Manuscript
- Journal Name:
- Chemistry - A European Journal
- Additional Journal Information:
- Journal Name: Chemistry - A European Journal Journal Volume: 22 Journal Issue: 20; Journal ID: ISSN 0947-6539
- Publisher:
- Wiley Blackwell (John Wiley & Sons)
- Country of Publication:
- Germany
- Language:
- English
Citation Formats
Alemayehu, Abraham B., Vazquez‐Lima, Hugo, Gagnon, Kevin J., and Ghosh, Abhik. Tungsten Biscorroles: New Chiral Sandwich Compounds. Germany: N. p., 2016.
Web. doi:10.1002/chem.201504848.
Alemayehu, Abraham B., Vazquez‐Lima, Hugo, Gagnon, Kevin J., & Ghosh, Abhik. Tungsten Biscorroles: New Chiral Sandwich Compounds. Germany. https://doi.org/10.1002/chem.201504848
Alemayehu, Abraham B., Vazquez‐Lima, Hugo, Gagnon, Kevin J., and Ghosh, Abhik. Tue .
"Tungsten Biscorroles: New Chiral Sandwich Compounds". Germany. https://doi.org/10.1002/chem.201504848.
@article{osti_1401429,
title = {Tungsten Biscorroles: New Chiral Sandwich Compounds},
author = {Alemayehu, Abraham B. and Vazquez‐Lima, Hugo and Gagnon, Kevin J. and Ghosh, Abhik},
abstractNote = {Abstract The oxidative metalation method, involving the interaction of free‐base meso ‐triarylcorroles and W(CO) 6 in refluxing decalin, led to a set of three tungsten(VI) biscorroles, the first homoleptic sandwich compounds involving corroles. Single‐crystal X‐ray structures of two of the complexes revealed square‐antiprismatic coordination and strongly domed corroles with long W−N distances of 2.15–2.22 Å and a substantial displacement of ∼1.17 Å of the metal relative to the mean N 4 planes of the ligands. The structures correspond to approximate C 2 symmetry and are thus chiral. DFT calculations strongly indicate that the enantiomers are configurationally stable and hence amenable to chiral resolution. Their other notable properties include a strongly blueshifted Soret band at (357±2) nm, a relatively intense π→W(d ) near‐IR feature at (781±3) nm, and a low electrochemical HOMO–LUMO gap of approximately 1.3 V. The results obtained herein suggest that metallobiscorroles may emerge as a new class of inherently chiral chromophores with novel optical and electrochemical properties.},
doi = {10.1002/chem.201504848},
journal = {Chemistry - A European Journal},
number = 20,
volume = 22,
place = {Germany},
year = {Tue Apr 05 00:00:00 EDT 2016},
month = {Tue Apr 05 00:00:00 EDT 2016}
}
https://doi.org/10.1002/chem.201504848
Web of Science
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