NDLI: The Stereospecific Ligand Exchange at a Pseudo-Benzylic T-4 Iridium Centre in Planar-Chiral Cycloiridium $(η^{6}-Arene)tricarbonylchromium$ Complexes

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The Stereospecific Ligand Exchange at a Pseudo-Benzylic T-4 Iridium Centre in Planar-Chiral Cycloiridium $(η^{6}-Arene)tricarbonylchromium$ Complexes

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The Stereospecific Ligand Exchange at a Pseudo-Benzylic T-4 Iridium Centre in Planar-Chiral Cycloiridium $(η^{6}-Arene)tricarbonylchromium$ Complexes

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Djukic, Jean-pierre Sredojevic, Dusan Zaric, Snezana Boulho, Cédric Scheeren, Carla Ricard, Louis Pfeffer, Michel
Description	Author Affiliation: Djukic JP ( Laboratoire de Synthèses métallo-induites, Institut de Chimie, CNRS, Université de Strasbourg, France. djukic@unistra.fr)
Abstract	The stereospecificity of ligand exchange at the $Ir^{III}$ centre of a cycloiridium arenetricarbonylchromium complex has been established experimentally by various analytical methods as well as by X-ray diffraction structural analysis and computational investigations. Two new cases of phenyl and methyl iridium(III) complexes have been prepared by reaction of $(,)-chlorido\{2-[(tricarbonyl)(η^{6}-phenylene-κC^{1′})chromium(0)]pyridine-κN\}(pentamethylcyclopentadienyl)iridium(III)$ with PhMgBr and MeMgBr. The determining influence of electrostatic repulsion has been established by means of density functional theory at the Becke–Perdew/TZP(ZORA) level by using, among other means, energy partitioning analysis. It is also shown that the $Cr(CO)_{3}$ fragment is likely to ease the ionic cleavage of the IrCl bond in chlorido cycloiridium tricarbonylchromium complexes in a way similar to that already established for the solvolysis of benzyl halide complexes, that is, through a direct interaction of the $Cr^{0}$ centre with the cationic $Ir^{III}$ centre.
ISSN	09476539
e-ISSN	15213765
Journal	Chemistry - A European Journal
Issue Number	41
Volume Number	15
Language	English
Publisher	Wiley-VCH;ChemPubSoc Europe
Publisher Date	2009-10-19
Publisher Place	Germany
Access Restriction	Open
Subject Keyword	Chemistry
Content Type	Text
Resource Type	Article
Subject	Organic Chemistry Catalysis

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