Synthesis and Crystal Structure of Anionic Zirconium(Ⅱ) Intermediate for Carbon-carbon Coupling: Li[Cp2Zr(C≡CPh)(η2∶1,2-PhC2C≡CPh)]

Chem. J. Chinese Universities ›› 2003, Vol. 24 ›› Issue (4): 580.

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Synthesis and Crystal Structure of Anionic Zirconium(Ⅱ) Intermediate for Carbon-carbon Coupling: Li[Cp₂Zr(C≡CPh)(η²∶1,2-PhC₂C≡CPh)]

ZHAO Jian She, GU Ai Ping, HE Shui Yang, Choukroun Robert, Valade Lydie, Cassoux Patrick

1. Shaanxi Key Laboratory of Physico Inorganic Chemistry, Department of Chemistry, Northwest University, Xi′an 710069, China;
2. Laboratoire de Chimie de Coordination du CNRS, F31077 Toulouse, France

Received:2002-06-21 Online:2003-04-24 Published:2003-04-24

Abstract

Abstract: The unexpected anionic Zr(Ⅱ) complex [Cp₂Zr(C≡CPh)(η²: 1,2 PhC₂C≡CPh)]^- was isolated from LiC≡CPh and Cp₂ZrCl₂ in THF, giving clear evidence for a C-C coupling between two alkynyl moieties, one of them being η² bonded to the zirconium atom. The complex was characterized by elemental analysis, NMR, IR spectroscopy and X ray diffraction. The synthesis reaction mechanism was discussed.

Key words: C C coupling, Anionic zirconium(Ⅱ) intermediate, Synthesis, Crystal structure

CLC Number:

O614.41

TrendMD:

ZHAO Jian She, GU Ai Ping, HE Shui Yang, Choukroun Robert, Valade Lydie, Cassoux Patrick. Synthesis and Crystal Structure of Anionic Zirconium(Ⅱ) Intermediate for Carbon-carbon Coupling: Li[Cp₂Zr(C≡CPh)(η²∶1,2-PhC₂C≡CPh)][J]. Chem. J. Chinese Universities, 2003, 24(4): 580.

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Synthesis and Crystal Structure of Anionic Zirconium(Ⅱ) Intermediate for Carbon-carbon Coupling: Li[Cp₂Zr(C≡CPh)(η²∶1,2-PhC₂C≡CPh)]

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