KOMPLEXE DES TYPES Ni(CO)4-n(P(CCC6H5)m(C6H5)3-m)n (n = 2,3,4; m = 3,2,1)

Article abstract of DOI:10.1016/S0022-328X(00)99838-3

The properties of the complexes Ni(CO)4-n(P(C<*>CC6H5)m(C6H5)3-m)n (n=2, 3, 4; m=3, 2, 1) are described.The complex Ni(P(C<*>CC6H5)3)4 is also formed by the reduction of NiX2 (X=Br, I) with an excess of P(C2C6H5)3.A weak ?-acidity of the alkynylphosphines falling in the series P(C2C6H5)3 > P(C2C6H5)2C6H5 > PC2C6H5(C6H5)2 is inferred from the trend of the force-constants f_CO.