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Ein nickelcarbenkomplex durch addition von tris(dimethylamino)alan an nickeltetracarbonyl

1973; Elsevier BV; Volume: 55; Issue: 1 Linguagem: Inglês

10.1016/s0022-328x(00)84028-0

1872-8561

Wolfgang Petz,

Asymmetric Hydrogenation and Catalysis

The reaction of [Zr(NMe2)4]2 with Fe(CO)5 leads to the multicarbene complex (1) containing two zirconium and three iron atoms. The crystal structure revealed that 1 results from the insertion of five CO groups into ZrN bonds generating chelating biscarbene ligands at two iron atoms and one terminal carbene ligand at the third iron atom. Thus, a planar and a boat-configured ring are formed (A and B) with relatively short FeZr distances of 284 and 282 pm, respectively, indicating early–late transition-metal interactions.