Synthesis, structure and catalytic activity of the first iridium(I) siloxide versus chloride complexes with 1,3-mesitylimidazolin-2-ylidene ligand
Kownacki, I; Kubicki, M; Szubert, K; Marciniec, B
| HERO ID | 4854457 |
|---|---|
| In Press | No |
| Year | 2008 |
| Title | Synthesis, structure and catalytic activity of the first iridium(I) siloxide versus chloride complexes with 1,3-mesitylimidazolin-2-ylidene ligand |
| Authors | Kownacki, I; Kubicki, M; Szubert, K; Marciniec, B |
| Journal | Journal of Organometallic Chemistry |
| Volume | 693 |
| Issue | 2 |
| Page Numbers | 321-328 |
| Abstract | The first iridium(I) complex containing siloxyl and N-heterocyclic carbene ligand such as [Ir(cod)(Mes)(OSiMe(3))] (1) and [Ir(CO)(2)(IMes)(OSiMe(3))] (3) have been synthesized and their structures solved by spectroscopy and X-ray methods as well as catalytic properties in selected hydrogenation reactions have been presented in comparison to their chloride analogues, i.e. [Ir(Cl)(cod)(IMes)] (2) and [Ir(Cl)(CO)(2)(IMes)] (4). The attempts at synthesis of iridium(l) complex with tert-butoxyl ligand has failed as leading instead to the iridium hydroxide complex [Ir(cod)(OH)(IMes)] (5) whose X-ray structure has also been solved. All complexes (1)-(5) show square planar geometry typical of the four-coordinated iridium complexes. Catalytic activity of complexes 1 and 2 was tested in transfer hydrogenation of acetophenone and hydrogenation of olefins. (C) 2007 Published by Elsevier B.V. |
| Doi | 10.1016/j.jorganchem.2007.11.013 |
| Wosid | WOS:000252686800019 |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Keyword | iridium siloxide complexes; imidazolin-2-ylidene ligand; catalysis; hydrogenation reactions |