
Pure and Applied Chemistry p. 63 - 80 (1983)
Update date:2022-08-03
Topics:
Jonas
Metallocenes can be converted into reactive organometallic compounds having readily accessible coordination sites by removing one or both of the C//5H//5-ligands: two types of reaction are discussed by which this can be achieved. Aspects to be covered include the synthesis of (C//5H//5)Co(C//2H//4)//2 and its application as a catalyst precursor for the cobalt-catalyzed alkyne cyclooligomerization and the cotrimerization of alkynes and nitriles. Also reported are the alkali metal cobaltates M//A left bracket Co(C//2H//4)//4 right bracket and M//A left bracket Co(cod)//2 right bracket (M//A equals alkali metal) which can be used as starting materials for the preparation of new catalysts for the hydrogenation of olefins and arenes. Finally, a series of novel binuclear complexes of Co, Fe and V is presented that are the first examples in which eta **6 -arene ligands are bonded to two metal centers.
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