dc.contributor.author |
Landman, Marile
|
|
dc.contributor.author |
Buitendach, Blenerhassitt E.
|
|
dc.contributor.author |
Conradie, Marrigje M.
|
|
dc.contributor.author |
Fraser, Roan
|
|
dc.contributor.author |
Van Rooyen, Petrus H.
|
|
dc.contributor.author |
Conradie, Jeanet
|
|
dc.date.accessioned |
2015-09-22T07:38:17Z |
|
dc.date.issued |
2015-02 |
|
dc.description.abstract |
An electrochemical study of a series of mono- and biscarbene complexes of tungsten pentacarbonyl with
mono- and dimeric heteroarene substituents are reported and compared in CH3CN and DCM. Results
revealed that the order of oxidation (reduction) depends largely on the aryl substituent attached to the
carbene carbon (2-thienyl, 2-furyl or 2-(N-methylpyrrolyl)). The order of oxidation (reduction) for monocarbene
complexes containing a monomeric heteroarene substituent ((1)–(3)), a dimeric heteroarene substituent
((4)–(6)) or biscarbene complexes connected with a heteroarene substituent ((7)–(9)) is the same,
namely 2-thienyl > 2-furyl > 2-(N-methylpyrrolyl). Carbene complexes containing a larger conjugated
heteroarene substituent attached to the carbene carbon reduce more easily than the monomeric analogues.
Tungsten biscarbene complexes exhibit two separate oxidation potentials for the two metal centres
or one large oxidation peak, consistent with the simultaneous oxidation of the two W metal centres. |
en_ZA |
dc.description.embargo |
2016-02-28 |
|
dc.description.librarian |
hb2015 |
en_ZA |
dc.description.sponsorship |
Norwegian Supercomputing Program (NOTUR) through a grant of computer time (Grant No. NN4654K), the South African National Research Foundation, the Central Research Fund of the University of the Free State, Bloemfontein and the University of Pretoria. |
en_ZA |
dc.description.uri |
http://www.elsevier.com/locate/jelechem |
en_ZA |
dc.identifier.citation |
Landman, M, Buitendach, BE, Conradie, MM, Fraser, R, Van Rooyen, PH & Conradie, J 2015, 'Fischer mono- and biscarbene complexes of tungsten with mono- and dimeric heteroaromatic substituents', Journal of Electroanalytical Chemistr, vol. 739, pp. 202-210. |
en_ZA |
dc.identifier.issn |
1572-6657 (print) |
|
dc.identifier.issn |
1873-2569 (online) |
|
dc.identifier.other |
10.1016/j.jelechem.2014.12.019 |
|
dc.identifier.uri |
http://hdl.handle.net/2263/50009 |
|
dc.language.iso |
en |
en_ZA |
dc.publisher |
Elsevier |
en_ZA |
dc.rights |
© 2014 Elsevier B.V. All rights reserved. Notice : this is the author’s version of a work that was accepted for publication in Journal of Electroanalytical Chemistry. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Electroanalytical Chemistry, vol.739, pp. 202-210, 2015. doi: 10.1016/j.jelechem.2014.12.019. |
en_ZA |
dc.subject |
Fischer carbene complexes |
en_ZA |
dc.subject |
Tungsten |
en_ZA |
dc.subject |
Electrochemistry |
en_ZA |
dc.subject |
DFT calculations |
en_ZA |
dc.title |
Fischer mono- and biscarbene complexes of tungsten with mono- and dimeric heteroaromatic substituents |
en_ZA |
dc.type |
Postprint Article |
en_ZA |