| Autor: |
Burling, Suzanne, F. Mahon, Mary, P. Reade, Steven, K. Whittlesey, Michael |
| Zdroj: |
Organometallics; July 2006, Vol. 25 Issue: 15 p3761-3767, 7p |
| Abstrakt: |
Transmetalation of the structurally characterized silver N-heterocyclic carbene (NHC) salt Ag(IpFMe)2(1, IpFMe 1-pentafluorobenzyl-3-methylimidazol-2-ylidene) to Rh(COD)Cl2affords Rh(IpFMe)(COD)Cl (2). The analogous neutral iridium complex, Ir(IpFMe)(COD)Br (5), may be formed upon elimination of MeOH from Ir(COD)(OMe)2in the reaction with 1-pentafluorobenzyl-3-methylimidazolium bromide. Thermolysis of Ag(IpFMe)2with either 5or Ir(COD)Cl2yields the cationic bis-NHC complex Ir(IpFMe)2(COD)(AgX2) (6, X Cl, Br), which exists as a mixture of conformers in solution. Addition of CO or AgOTf to 2gives Rh(IpFMe)(CO)2Cl (3) and Rh(IpFMe)(COD)(OTf) (4), respectively. The molecular structures of compounds 1−6have been determined by X-ray crystallography. |
| Databáze: |
Supplemental Index |
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