Reactions of rhenium compounds. Part II. The preparation and structure of tricarbonyltrimethylene-1,2-cyclopentadienylrhenium

Abstract

1,3- or 1,5-Cyclo-octadiene undergoes transannular dehydrogenation with decacarbonyldirhenium to give the bicyclic derivative, tricarbonyltrimethylene-1,2-cyclopentadienylrhenium(I), C₈H₉Re(CO)₃. The structure of the product, suggested on the basis of infrared, proton magnetic resonance, and mass spectra, has been confirmed by single-crystal X-ray analysis. The Re(CO)₃ group is bonded to the cyclopentadienyl ring in the same way as in many [M(CO)₃Arene] complexes.