One way of doing this is to use a ferrocene unit, the nickel and palladium complexes of 1,1'-diphosphinoferrocenes are arranged such that the metal has two phosphorus atoms in the trans sites.
One way of doing this is to use a ferrocene unit. One way of doing this is to use the nickel. One way of doing this is to use palladium complexes of 1,1'. The metal has two phosphorus atoms in the trans sites. Diphosphinoferrocenes are arranged such this.