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Synthesis and crystal structure of Ir(C2H4)2(C5H7O2) |
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| Authors: | VA Bhirud PW Kletnieks JF Haw MM Olmstead |
| Institution: | a Department of Chemical Engineering and Materials Science, University of California, Davis, CA 95616, USA b Department of Chemistry, University of Southern California, Los Angeles, CA 90086, USA c Chemistry Department, University of Alabama, Shelby Hall, P.O. Box 870336, Tuscaloosa, AL 35487-0336, USA d Department of Chemistry, University of California, Davis, CA 95616, USA |
| Abstract: | We report a new synthesis and characterization of Ir(C2H4)2(C5H7O2) (acetylacetonato)-bis(η2-ethene)iridium(I)], prepared from (NH4)3IrCl6 · H2O in a yield of about 45%. The compound has been characterized by X-ray diffraction crystallography, infrared, Raman, and NMR spectroscopies and calculations at the level of density functional theory. Ir(C2H4)2(C5H7O2) is isostructural with Rh(C2H4)2(C5H7O2), but there is a substantial difference in the ethylene binding energies, with Ir-ethylene having a stronger interaction than Rh-ethylene; two ethylenes are bound to Ir with a binding energy of 94 kcal/mol and to Rh with a binding energy of 70 kcal/mol. |
| Keywords: | Acetylacetonate Ethylene Iridium complex |
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