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

Proft, Bernd; Pörschke, Klaus-Richard; Lutz, Frank; Krüger, Carl

doi:10.1002/cber.19941270413

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

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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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引用

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.

引用: https://hdl.handle.net/11858/00-001M-0000-0024-392C-F

要旨

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(η²,η²-C₇H₈) (1) and (Ph₃P)Ni(η²,η²-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.