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Mono and dinuclear complexes of half-sandwich platinum group metals (Ru, Rh and Ir) bearing a flexible pyridyl-thiazole multidentate donor ligand
Auteur(s)
Date Issued
2010
Journal
Journal of Organometallic Chemistry, Elsevier, 2010/695/2/226–234
Abstract
The mononuclear cationic complexes [(η<sup>6</sup>-C<sub>6</sub>H<sub>6</sub>)RuCl(L)]<sup>+</sup> (<b>1</b>), [(η<sup>6</sup>-<i>p-i</i>PrC<sub>6</sub>H<sub>4</sub>Me)RuCl(L)]<sup>+</sup> (<b>2</b>), [(η<sup>5</sup>-C<sub>5</sub>H<sub>5</sub>)Ru(PPh<sub>3</sub>)(L)]<sup>+</sup> (<b>3</b>), [(η<sup>5</sup>-C<sub>5</sub>Me<sub>5</sub>)Ru(PPh<sub>3</sub>)(L)]<sup>+</sup> (<b>4</b>), [(η<sup>5</sup>-C<sub>5</sub>Me<sub>5</sub>)RhCl(L)]<sup>+</sup> (<b>5</b>), [(η<sup>5</sup>-C<sub>5</sub>Me<sub>5</sub>)IrCl(L)]<sup>+</sup> (<b>6</b>) as well as the dinuclear dicationic complexes [{(η<sup>6</sup>-C<sub>6</sub>H<sub>6</sub>)RuCl}<sub>2</sub> (L)]<sup>2+</sup> (<b>7</b>), [{(η<sup>6</sup>-<i>p-i</i>PrC<sub>6</sub>H<sub>4</sub>Me)RuCl}<sub>2</sub> (L)]<sup>2+</sup> (<b>8</b>), [{(η<sup>5</sup>-C<sub>5</sub>H<sub>5</sub>)Ru(PPh<sub>3</sub>)}<sub>2</sub> (L)]<sup>2+</sup> (<b>9</b>), [{(η<sup>5</sup>-C<sub>5</sub>Me<sub>5</sub>)Ru(PPh<sub>3</sub>)}<sub>2</sub> (L)]<sup>2+</sup> (<b>10</b>), [{(η<sup>5</sup>-C<sub>5</sub>Me<sub>5</sub>)RhCl}<sub>2</sub> (L)]<sup>2+</sup> (<b>11</b>) and [{(η<sup>5</sup>-C<sub>5</sub>Me<sub>5</sub>)IrCl}<sub>2</sub> (L)]<sup>2+</sup> (<b>12</b>) have been synthesized from 4,4′-bis(2-pyridyl-4-thiazole) (L) and the corresponding complexes [(η<sup>6</sup>-C<sub>6</sub>H<sub>6</sub>)Ru(μ-Cl)Cl]<sub>2</sub>, [(η<sup>6</sup>-<i>p-i</i>PrC<sub>6</sub>H<sub>4</sub>Me)Ru(μ-Cl)Cl]<sub>2</sub>, [(η<sup>5</sup>-C<sub>5</sub>H<sub>5</sub>)Ru(PPh<sub>3</sub>)<sub>2</sub>Cl)], [(η<sup>5</sup>-C<sub>5</sub>Me<sub>5</sub>)Ru(PPh<sub>3</sub>)<sub>2</sub>Cl], [(η<sup>5</sup>-C<sub>5</sub>Me<sub>5</sub>)Rh(μ-Cl)Cl]<sub>2</sub> and [(η<sup>5</sup>-C<sub>5</sub>Me<sub>5</sub>)Ir(μ-Cl)Cl]<sub>2</sub>, respectively. All complexes were isolated as hexafluorophosphate salts and characterized by IR, NMR, mass spectrometry and UV–vis spectroscopy. The X-ray crystal structure analyses of [<b>3</b>]PF<sub>6</sub>, [<b>5</b>]PF<sub>6</sub>, [<b>8</b>](PF<sub>6</sub>)<sub>2</sub> and [<b>12</b>](PF<sub>6</sub>)<sub>2</sub> reveal a typical piano-stool geometry around the metal centers with a five-membered metallo-cycle in which 4,4′-bis(2-pyridyl-4-thiazole) acts as a <i>N,N′</i>-chelating ligand.
Publication type
journal article
