| http://www.w3.org/ns/prov#value | - The metallocenes are represented by the general formula (C5 R'm)p R"s (C5 R'm)MeQ3-p and R"s (C5 R'm)2 MeQ' wherein (C5 R'n) is cyclopentadienyl or substituted cyclopentadienyl, each R' is the same or different and is hydrogen or a hydrocarbyl radical such as alkyl, alkenyl, aryl, alkylaryl, or arylalkyl radicals containing from 1 to 20 carbon atoms or two carbon atoms are joined together to form
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