Synthesis and Crystal Structure of Heterodimetallic Complexes[Cp2V(μ-η2∶η4-PhC4Ph)MCp2′](M=Ti,Zr;Cp′=C5H5,C5H4SiMe3)

Abstract

Abstract: The reaction of [Cp₂Ti(C≡CPh)₂], [Cp₂Zr(C≡CPh)₂], [(C₅H₄SiMe ₃)₂Zr(C≡CPh)₂] and vanadocene in toluene was performed at room temperature and gave heterodimetallic complexes[Cp 2V(μ-η²∶η⁴-PhC₄Ph)·MCp₂′] (1, M=Ti, Cp′=C₅H₅; 2, M=Zr, Cp′=C₅H₅; 3, M=Zr, Cp′=C₅H₄SiMe₃), respectively. These compounds, which have been characterized by elemental analysis, mass spectrometry, ¹H NMR, IR and Raman spectroscopy, exhibit similar magnetic susceptibilities. According to an X-ray diffraction analysis of compound 3, the Cp₂V and Cp₂′Zr metallocene moieties are bonded to a butadiene(or butadiyne) framework via the two internal carbon atoms for Cp₂V, and via both the two internal carbon atoms and the two external carbon atoms for Cp₂′Zr. The distances and angles observed around the internal carbon atoms of the butadiene framework indicate that both internal carbon atoms of butadiene skeleton are planar and tetracoordinated.

Key words: Heterodimetallic complexes, Structure elucidation, Titanium, Zirconium, Vanadium

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 Heterodimetallic Complexes[Cp₂V(μ-η²∶η⁴-PhC₄Ph)MCp₂′](M=Ti,Zr;Cp′=C₅H₅,C₅H₄SiMe₃)[J]. Chem. J. Chinese Universities, 2002, 23(10): 1833.

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Synthesis and Crystal Structure of Heterodimetallic Complexes[Cp₂V(μ-η²∶η⁴-PhC₄Ph)MCp₂′](M=Ti,Zr;Cp′=C₅H₅,C₅H₄SiMe₃)

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