Protected (fluoroaryl)borates as effective counteranions for cationic metallocene polymerization catalysts
- Northwestern Univ., Evanston, IL (United States)
The functionalized (fluoroaryl)borate salts Ph{sub 3}C{sup +}B(C{sub 6}F{sub 4}TBS){sub 4}{sup -} and Ph{sub 3}C{sup +}B(C{sub 6}F{sub 4}TBS){sub 4}{sup -} and (TBS - {sup t}BuMe{sub 2}Si; TIPS = {sup i}Pr{sub 3}Si) are prepared in three steps from 1,4-HC{sub 6}F{sub 4}Br. Reaction with zirconocene dimethyls yields crystalline, thermally stable, soluble L{sub 2}ZrCH{sub 3}{sup +}B(C{sub 6}F{sub 4}SiR{sub 3}){sub 4}{sup -} and L{sub 2}{sup -}ZrH{sup +}(C{sub 6}F{sub 4}SiR{sub 3}){sub 4}{sup -} salts (L = {eta}{sup 5}-C{sub 5}H{sub 5}; {eta}{sup 5}-1,2-Me{sub 2}C{sub 5}H{sub 3}; L{sup +} = {eta}{sup 5}-Me{sub 5}C{sub 5}) which function as highly active ethylene polymerization catalysts. 16 refs., 1 tab.
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- FG02-86ER13511
- OSTI ID:
- 81683
- Journal Information:
- Organometallics, Journal Name: Organometallics Journal Issue: 7 Vol. 14; ISSN ORGND7; ISSN 0276-7333
- Country of Publication:
- United States
- Language:
- English
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