Reactivity of the Carbyne Ligand

Simultaneously, we have been occupied with the question as to how the carbyne ligand behaves when it is split off from the metal. Analogous to the carbene complexes, in the absence of a suitable reaction partner, one also observes dimerization, in this case to alkynes (100). The conditions for the removal are very mild. In nonpolar solvents, diphenylacetylene or dimethylacetylene are accessible in this way at 30°C. One arrives at the same result when the solid methylcarbync complex is heated to 50°C  

the way appears to be open to make carbyne complexes for use in the syntheses of organic compounds. Since to our knowledge there is no specific and selective carbyne source available for preparative purposes, presumably there arises here a wide field of interesting possibilities of application, especially because of the mild conditions required to transfer the carbyne ligand. 

It is hoped that this report has shown that there are still many exciting possibilities open in the field of organometallic chemistry. 

The chemistry which I have had the honor to report is in large part the work of my co-workers. I would like once more to thank very heartily Miss Dipl.-Chem. K. Weiss as well as Dr. K.H. Dotz, Dr. H. Fischer, Dr. F.R. Kreissl, Dr. S. Riedmiiller, Dr. K. Schmid, Dr. A. de Renzi, Dipl.-Chem. B. Dorrer, Dipl.-Chem. W. Kalbfus, Dipl.-Chem. H.-J. Kalder, Dipl.-Chem. G. Kreis, Dipl.-Chem. E.W. Meineke, Dipl.-Chem. D. Plabst, Dipl.-Chem. K. Richter, Dipl.-Chem. U. Schubert, Dipl.-Chem. A. Schwanzer, Dipl.-Chem. T. Selmayr, Dipl.-Chem. S. Walz, and Cand. Chem. W. Held for their collaboration. At the same time, that sentiment applies also to the colleagues of our Institute and their co-workers Dr. J. Muller for the evaluation of the mass spectra, Dr. C.G. Kreiter for the 13C NMR studies, and Dr. G. Iluttner in collaboration with Dipl.-Chem. W. Gartzke as well as Dipl.-Chem. H. Lorenz for the X-ray structural analyses. 

Fischer, E. O., and Werner, H., Metal-jr-Complexes, Yol. I Complexes with Di- and Oligo-olefinic Ligands. Elsevier, Amsterdam, 1966. 

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