Neue Synthesen Mit Ubergangsmetallkomplexen, X. Mitt / New Syntheses With Transition Metal Complexes, X.

Abstract

The X-ray determination (W. HOPPE and coworkers) of the structure of the Rh-complex from tris- [triphenylphosphin] -rhodiumchloride and 1.2-bis- [phenylpropinoyl] -benzene (synthesized by E. MÜLLER and coworkers) shows a molecular structure with a metallocyclopentadiene system formed by both C≡C groups and the Rh atom by ring closure. The coordination number of rhodium is 5. The reaction path leading to the complex is discussed, and it is pointed out that the complex does not reacting with typical dienophiles but with acetylenes.