Yes / The functionalisation of the 16-electron complex [Os(η6-p-cymene)(1,2-dicarba-closo-dodecarborane-
1,2-dithiolato)] (1) with a series of Lewis bases to give the 18-electron complexes of general formula
[Os(η6-p-cymene)(1,2-dicarba-closo-dodecarborane-1,2-dithiolato)(L)] (L = pyridine (2), 4-dimethylaminopyridine
(3), 4-cyanopyridine (4), 4-methoxypyridine (5), pyrazine (6), pyridazine (7), 4,4’-bipyridine
(8) and triphenylphosphine (9)) is reported. All 18-electron complexes are in equilibrium in solution with
the 16-electron precursor, and thermochromic properties are observed in some cases (2, 3, 5, 8, and 9).
The binding constants and Gibbs free energies of the equilibria are determined using UV-visible titrations
and their stabilities investigated. Synthetic routes for forcing the formation of the 18-electron species are
proposed, and analytical methods to characterise the equilibria are described. / We thank the Leverhulme Trust (Early Career Fellowship No. ECF-2013-414 to NPEB), and the University of Warwick (Grant No. RD14102 to NPEB).
| Identifer | oai:union.ndltd.org:BRADFORD/oai:bradscholars.brad.ac.uk:10454/11260 |
| Date | 24 December 2015 |
| Creators | Pitto-Barry, Anaïs, South, A., Rodger, A., Barry, Nicolas P.E. |
| Source Sets | Bradford Scholars |
| Language | English |
| Detected Language | English |
| Type | Article, Published version |
| Rights | © 2016 The Royal Society of Chemistry. Reproduced in accordance with the publisher's self-archiving policy. This article is licensed under a Creative Commons Attribution 3.0 Unported Licence., CC-BY |
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