Abstract Cooligomerization of propadiene with propyne catalysed by bis (1, 5- cyclooctadiene) nickel and tetrakis (triphenylphosphine) nickel gives a variety of products, including besides the cooligomers also the homooligomers of both monomers. The type of catalyst affects partially the product distribution due to changes in the degree of oligomerization. Cooligomerization of propadiene with 3-deuteriopropyne provided ...