| 1 | Author | Jörn Müller, Matthias Tschampel, Carl Krüger | Requires cookie* |
| Title | Rhodium-zentrierte Bildung eines Cyclobutenyl-Liganden und Umlagerung in einen Cyclopentadienyl-Komplex Rhodium-centered Formation of a Cyclobutenyl Ligand and Rearrangement to a Cyclopentadienyl Complex  | ||
| Abstract | Cyclization of two diphenylacetylene molecules occurs if [(cod)RhCl] 2 (cod = 1.5-cyclooc-tadiene) is treated with methyllithium in the presence of tolane. The isolated (cod)Rh complex 2 contains an e*o-methyl-tetraphenylcyclobutenyl ligand and was characterized by X-ray diffraction analysis. Thermolysis of 2 in acetonitrile causes ring expansion of the methylcyclobutenyl unit with formation of the tretraphenylcyclopentadienyl complex 3 together with 3-methyl-tet-raphenylcyclobutene. Mechanistic aspects are discussed as well as spectroscopic data of the new compounds. | ||
| Reference | Z. Naturforsch. 43b, 1519—1523 (1988); eingegangen am 13. Juni 1988 | ||
| Published | 1988 | ||
| Keywords | Methyltetraphenylcyclobutenyl Rhodium Complexes, Tetraphenylcyclopentadienyl Rhodium Complexes, NMR Spectra, Crystal Structure | ||
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