Remarkable Behavior of a Bifunctional Alkynylborane Zirconocene Complex toward Donor Ligands and Acetylenes

…, CG Daniliuc, G Erker

Index: Xu, Xin; Kehr, Gerald; Daniliuc, Constantin G.; Erker, Gerhard Journal of the American Chemical Society, 2013 , vol. 135, # 17 p. 6465 - 6476

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Citation Number: 14

Abstract

Treatment of a [(trimethylsilylethynyl) alkenyl] ZrCp2 complex with Piers' borane [HB (C6F5) 2] resulted in the clean formation of the Zr/B complex [η2-(C6F5) 2B-C C-SiMe3] ZrCp2 (3). This compound shows some unique reaction patterns. With a variety of typical donor ligands (carbon monoxide, an isonitrile, a nitrile, THF-d 8,) it forms the respective adducts 5 (four examples characterized by X-ray diffraction). Toward terminal alkynes (RC CH) ...