Research has shown that production of alpha-olefins can be improved with the use of geometry specific catalysts. Broene et. al. successfully dimerized 1-hexene into 1-dodecene using catalytic Cp*CoH(P(OMe3)) slowly and in poor yields. Regioselectivity for the 2,1 insertion product improves with decreasing cone angle of the phosphine ligand. Phosphabenzene has been synthesized as a small cone angle ligand. Work on the synthesis of this ligand and its coupling to the cobalt complex [Cp*Co(ethene)2] is reported.