| http://www.w3.org/ns/prov#value | - .05 mmol or 0.01 mmol of the transition metal compound (b) at 70??? C. or 80??? C. for 30 minutes, and being:(i) a compound having a --OR group wherein R is an alkyl group, an aryl group, an alkylaryl group, an arylalkyl group, a cycloalkyl group, a halogenated alkyl group or a halogenated aryl group each having 1 to 20 carbon atoms, (ii) Cp2 M1 R1 a R2 b . . . (II) (iii) (Cp--Ae --Cp)M1 R1 a R2 b
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