Olefin, Acetylene, Phosphine, Isocyanide, and Diazene Complexes of Nickel

OLEFIN, ACETYLENE, PHOSPHINE, ISOCYANIDE, AND DIAZENE COMPLEXES OF NICKEL(0) 

Checked by H. BERKE.f H DIETRICH, J. LAMBRECHT.t P. HARTER, J. OPITZ, and W. SPRINGER  

The apparatus is set up as shown in Fig. 18, with the dropping funnel in place. Bis(l,5-cyclooctadiene)nickel(0) (10.0 g, 36.4 mmol) and a magnetic stirring bar are transferred into flask A and the system is reevacuated and 

The compounds listed in Table I can be conveniently prepared by this procedure. The quantities of the appropriate ligands are listed, as are the preferred solvents for each reaction melting points and colors are listed for characterization. Several of the products require cooling or removal of solvent to cause crystallization. 

The air-stabilities of the complexes in Table I vary widely. Isocyanide complexes and complexes of the alkyl phosphines are very air-sensitive or pyrophoric. The aryl phosphine complexes are moderately air-sensitive the phosphite complexes can be handled in air but should be stored in an inert atmosphere. The phosphite complexes are insoluble in polar solvents such as 

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