O.O.O.O.O.O.[F:7][B-:8]([F:11])([F:10])[F:9].[F:12][B-:13]([F:16])([F:15])[F:14].[Fe+2:17].C=C>ClCCl>[F:7][B-:8]([F:11])([F:10])[F:9].[F:12][B-:13]([F:16])([F:15])[F:14].[Fe+2:17]A solution of h25 (5.1 mg; 8.9 μmol) in about 2 mL dichloromethane was added to a suspension of iron bis(tetrafluoroborate) hexahydrate (3.0 mg; 8.9 μmol) in dichloromethane. The mixture was stirred at room temperature for about 18 hours before being used in the polymerization of ethylene.
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