PREPARATION OF ZEROVALENT NICKEL COMPLEXES FROM ELEMENTAL NICKEL

摘要

Zerovalent nickel complexes of the types Ni(MZ3)4 and Ni(MZ3)2A; wherein M is P, As or Sb, Z is R or OR, R is an alkyl or aryl radical having up to 18 carbon atoms and may be the same or different, and at least one Z is OR, A is a monoolefinic compound having 2 to 20 carbon atoms, the R radicals of a given MZ3 of Ni(MZ3)2A preferably being so chosen that the ligand has a cone angle of at least 130 DEG ; are prepared by reacting elemental nickel with the MZ3 ligand at a temperature in the range of 0 DEG C.-150 DEG C. in the presence of a halogen containing derivative of MZ3 as a catalyst. A more rapid reaction is realized by carrying out the preparation in an organonitrile solvent.