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  Home > JCE Print > Journal of Chemical Education > Issues > 1999  > March  >
In the Laboratory
Ruthenium Complexes with h1-Organic Ligands: An Advanced Undergraduate Inorganic/Organometallic Chemistry Experiment
Marie P. Cifuentes, Fiona M. Roxburgh, and Mark G. Humphrey*
Australian National University, Department of Chemistry, Canberra ACT 0200, AUSTRALIA
Cover
March 1999
Vol. 76 No. 3
p. 401
Abstract
This experiment involves interconversions of carbene and alkenyl ligands, important monohapto ligands which are often met in an advanced undergraduate organometallic chemistry course. References are provided to extend the experiment to include alkynyl and vinylidene ligands. The syntheses described can be comfortably accommodated in about 8 h of laboratory time. Several important aspects of organometallic and inorganic chemistry are illustrated: namely, the EAN rule (all complexes prepared possess 18 valence electron configurations); "tailoring" coordination mode and reactivity by choice of ligands; the stabilization of reactive organic species utilizing transition metal centers; and the significance of a transition metal in "directing" reactivity to a specific carbon of the organic ligand. Students will observe the importance of IR, NMR and MS in the characterization of organometallic compounds. In the process they will obtain evidence for unusual chemical shifts of carbons formally multiply bonded to metals and observe the utility of the mass spectral isotope distribution in confirming product identity for many metal complexes.
More Information
*  Citation
 Cifuentes, Marie P.; Roxburgh, Fiona M.; Humphrey, Mark G. J. Chem. Educ. 1999 76 401.
*  Keywords
 Inorganic Chemistry; Organometallics; Synthesis; IR Spectroscopy; NMR Spectrometry; Inorganic Synthesis
*  History
 Created:
Last Updated:		 June 15, 1999
June 22, 2005
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