- Title
- Synthesis, characterization and electrochemistry of rhodium (iii) complexes of meso-substituted [14] tribenzotriphyrin (2.1. 1)
- Creator
- Xue, Zhaoli, Wang, Yemei, Mack, John, Mkhize, Scebi, Nyokong, Tebello, Fang, Yuanyuan, Ou, Zhongping, Kadish, Karl M
- Subject
- To be catalogued
- Date
- 2016
- Type
- text
- Type
- article
- Identifier
- http://hdl.handle.net/10962/241043
- Identifier
- vital:50899
- Identifier
- xlink:href="https://doi.org/10.1039/C6RA03028A"
- Description
- A thermal reaction using a series of [14]tribenzotriphyrins(2.1.1) (TriPs, 1a–d) with Rh2(C8H12)Cl2 provides RhIII–TriP complexes (2a–d) in 40−52% yields. The complexes were characterized by mass spectrometry, UV-visible absorption and 1H NMR spectroscopy. Single crystal X-ray analysis reveals that 2b adopts a dome-shaped conformation. The rhodium(III) ion is coordinated by the three pyrrole nitrogen atoms, two chloride ions and the nitrogen atom of an acetonitrile (CH3CN) solvent molecule. The optical spectra can be assigned using Michl's perimeter model. The L and B bands of the 2a–d complexes lie at ca. 600 and 500 nm, respectively, and are markedly red shifted relative to those of 1a–d. A reversible one-electron oxidation and two reversible one-electron reductions are observed in the cyclic voltammograms of 2a–d in CH2Cl2. The redox potentials are consistent with the optical data and the relatively narrow HOMO–LUMO gaps that are predicted in DFT calculations. TD-DFT calculations have been used to assign a third intense spectral band at 375 nm to a higher energy π → π* transition of the [14]tribenzotriphyrin(2.1.1) π-system.
- Format
- computer, online resource, application/pdf, 1 online resource (8 pages), pdf
- Publisher
- Royal Society of Chemistry
- Language
- English
- Relation
- RSC Advances, Xue, Z., Wang, Y., Mack, J., Mkhize, S., Nyokong, T., Fang, Y., Ou, Z. and Kadish, K.M., 2016. Synthesis, characterization and electrochemistry of rhodium (iii) complexes of meso-substituted [14] tribenzotriphyrin (2.1. 1). RSC advances, 6(48), pp.41919-41926, RSC Advances volume 6 number 48 p. 41919 2016 2046-2069
- Rights
- Publisher
- Rights
- Use of this resource is governed by the terms and conditions of the Royal Society of Chemistry Terms and Conditions Statement (https://0-www.rsc.org.wam.seals.ac.za/help-legal/)
- Rights
- Open Access
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Collections
Mack, John (Associate Prof)
Nyokong, Tebello (Distinguished Professor)
RU DST/NRF SARChI for Medicinal Chemistry and Nanotechnology
RU Department of Chemistry
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