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Borata-Alkene Derived Syntheses of (F5C6)2B‑Substituted Bis(indenyl) Group 4 Metal Complexes

Version 2 2016-08-16, 14:27
Version 1 2016-07-27, 13:56
Posted on 2016-07-30 - 00:00
An indene based borata-alkene was used as a reagent for the synthesis of B­(C6F5)2-functionalized group 4 bent-metallocene complexes. The respective borata-alkene was prepared by HB­(C6F5)2 hydroboration of dimethylbenzofulvene followed by deprotonation with lithium tetramethylpiperidide. Treatment of CpTiCl3 or CpZrCl3 with the borata-alkene gave the respective [(C6F5)2B-indenyl]­CpMCl2 bent-metallocene complexes. Both were characterized by X-ray diffraction. The boryl-functionalized metallocenes gave active ethene or propene polymerization catalysts, respectively, upon activation with triethylaluminum.

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