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Synthese und Struktur von (R3P)Ni(1,6-Heptadiin)-Komplexen

MPS-Authors

Proft,  Bernd
Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Pörschke,  Klaus-Richard
Research Group Pörschke, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

Lutz,  Frank
Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Krüger,  Carl
Service Department Krüger (XRAY), Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Citation

Proft, B., Pörschke, K.-R., Lutz, F., & Krüger, C. (1994). Synthese und Struktur von (R3P)Ni(1,6-Heptadiin)-Komplexen. Chemische Berichte, 127(4), 653-655. doi:10.1002/cber.19941270413.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0024-392C-F
Abstract
Displacement of the alkene ligand in Ligand-Ni(0)(1,6-diene) complexes by 1,6-heptadiyne, the parent 1,6-diyne, affords the complexes (Me3P)Ni(η22-C7H8) (1) and (Ph3P)Ni(η22-C7H8) (2). According to an X-ray structure analysis of the PMe3 derivative 1 the nickel atom is ideally trigonal-planar coordinated by the phosphane and both C≡C bonds. The increased stability of the complexes as compared to Ligand-Ni(HC≡CH)2 complexes is referred to the strong chelating effect which is special to the 1,6-functionalization. The compounds can be considered to be model complexes for the key intermediates of numerous transition metal-mediated coupling reactions of (substituted and unsubstituted) 1,6-diynes.