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Synthesis and structural characterisation of new cationic dinuclear ruthenium(II) thiolato complexes of the type [Ru<sub>2</sub>(η<sup>6</sup>-arene)<sub>2</sub>(μ-<i>p</i>-S–C<sub>6</sub>H<sub>4</sub>–Br)<sub>3</sub>]<sup>+</sup>
Auteur(s)
Date de parution
2004-02-20
In
Inorganica Chimica Acta, 2004/357/834-838
Résumé
Dinuclear dichloro complexes [Ru(C<sub>6</sub>H<sub>6</sub>)Cl<sub>2</sub>]<sub>2</sub>, [Ru(p-MeC<sub>6</sub>H<sub>4</sub><i><sup>i</sup></i>Pr)Cl<sub>2</sub>]<sub>2</sub>, [Ru(1,2,4,5-C<sub>6</sub>H<sub>2</sub>Me<sub>4</sub>)Cl<sub>2</sub>]<sub>2</sub>, and [Ru(C<sub>6</sub>Me<sub>6</sub>)Cl<sub>2</sub>]<sub>2</sub> react in ethanol with <i>p</i>-bromothiophenol to give the corresponding cationic complexes [Ru<sub>2</sub>(C<sub>6</sub>H<sub>6</sub>)<sub>2</sub>(<i>p</i>-S–C<sub>6</sub>H<sub>4</sub>–Br)<sub>3</sub>]</sup>+</sup> (<b>1</b>), [Ru<sub>2</sub>(<i>p</i>-MeC<sub>6</sub>H<sub>4</sub><i><sup>i</sup></i>Pr)<sub>2</sub>(<i>p</i>-S–C<sub>6</sub>H<sub>4</sub>–Br) <sub>3</sub>]<sup>+</sup> (<b>2</b>), [Ru<sub>2</sub>(1,2,4,5-C<sub>6</sub>H<sub>2</sub>Me<sub>4</sub>)<sub>2</sub>(<i>p</i>-S–C<sub>6</sub>H<sub>4</sub>–Br)<sub>3</sub>]<sup>+</sup> (<b>3</b>), and [Ru<sub>2</sub>(C<sub>6</sub>Me<sub>6</sub>)<sub>2</sub>(<i>p</i>-S–C<sub>6</sub>H<sub>4</sub>–Br)<sub>3</sub>]<sup>+</sup> (<b>4</b>), which can be isolated in quantitative yield as their chloride salts. X-ray structure analysis of these complexes shows that the nature of the arene ligand influences the folding of the <i>p</i>-S–C<sub>6</sub>H<sub>4</sub>–Br units. In <b>1</b>, where the less hindered arene ligand is present, the three phenyl rings of the thiolato units are not constrained to a coplanar arrangement, whereas in <b>4</b> the C<sub>6</sub>Me<sub>6</sub> forces the three phenyl rings to be in perfect planarity. Complexes <b>2</b> and <b>3</b> show an intermediary arrangement.
Identifiants
Type de publication
journal article
