Synthesis, characterization, and isomerization of an iridabenzvalene
Metal- halogen exchange of vinylcyclopropene 4 followed by addition of [(Me3P)2Ir(CO)Cl] produced iridabenzvalene 5. The metallabenzene valence isomer was characterized by NMR and IR spectroscopy and by X-ray crystallography. Isomerization of complex 5 to iridabenzene derivatives 6 and 13 was accomplished by thermolysis and by Ag+ ions, respectively. The former transformation was a clean and quantitative process that displayed first-order kinetics.
Gilbertson
RD
Department of Chemistry, University of Oregon, Eugene 97403-1253, USA.
Weakley
TJ
Haley
MM