Concepedia

Synthesis, Structure, and Properties of {(<sup>t</sup>Bu<sub>2</sub>PC<sub>2</sub>H<sub>4</sub>P<sup>t</sup>Bu<sub>2</sub>)Ni}<sub>2</sub>(μ-η<sup>2</sup>:η<sup>2</sup>-C<sub>6</sub>H<sub>6</sub>) and (<sup>t</sup>Bu<sub>2</sub>PC<sub>2</sub>H<sub>4</sub>P<sup>t</sup>Bu<sub>2</sub>)Ni(η<sup>2</sup>-C<sub>6</sub>F<sub>6</sub>)<sup>1</sup>

Ingrid Bach, Klaus‐Richard Pörschke, Richard Goddard, Carsten Kopiske, Carl Krüger, Anna Rufińska, Klaus Seevogel

Organometallics · 1996 · 148 citations · 43 references

DOI

Concepts

Abstract

Thermolysis of (tBu2PC2H4PtBu2)NiMe2 in benzene or reduction of (tBu2PC2H4PtBu2)NiCl2 with Mg* in THF/benzene affords a solution of mononuclear (tBu2PC2H4PtBu2)Ni(η2-C6H6) (1) and dinuclear {(tBu2PC2H4PtBu2)Ni}2(μ-η2:η2-C6H6) (2) in equilibrium. Complex 2 has been isolated; the X-ray structure analysis reveals an antifacial coordination of the [(tBu2PC2H4PtBu2)Ni0] moieties to adjacent CC bonds of a formal cyclohexatriene ligand. According to solid-state and solution NMR the structure of 2 is static in the solid and fluxional in solution. Displacement of the benzene ligand in 1 or 2 by C6F6 affords mononuclear (tBu2PC2H4PtBu2)Ni(η2-C6F6) (5) for which the molecular structure is also reported.

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