| http://www.w3.org/ns/prov#value | - Suitable organoaluminum compounds used together with the vanadium compounds are compounds represented by the general formula R'm AlX'3-m wherein R' represents a hydrocarbon group, preferably an aliphatic, aromatic or alicyclic hydrocarbon group having 1 to 20 carbon atoms, especially 1 to 10 carbon atoms, X' represents a halogen atom, especially fluorine, chlorine or bromine, and m is a number rep
|
