| http://www.w3.org/ns/prov#value | - eing the same or different, R is a structural bridge between (CpR4) and (CDR'4) imparting stereorigidity to the metallocene, Me is a Group IIIB, IVB, VB or VIB metal, Q is a hydride, a halogen, an amide or a hydrocarbyl radical, each Q being the same or different, except only one Q can be hydride and p is the valence of Me minus 2; wherein the ionizing ionic compound does not contain an active pr
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