Studies on Linear Heterotrimetallic M-E-M(M=Mo,W;E=Hg,Zn) Compounds──Synthesis,Properties and Structural Characterization of [η5-RC5H4(CO)3M]2Zn(M=Mo,W;R=CO2Me,CO2Et)

Abstract

Abstract: The trimetallic M-Hg-Mcompounds containing an electron-withdrawing group Ron cyclopentadienyl ring[η⁵-RC₅H₄(CO)₃M]₂Hg (M=Mo,W;R=CO₂Me,CO₂Et) have been shown to react with activated Zn powder in THFat reflux to give the corresponding trimetallic M-Zn-Mcompounds [η⁵-RC₅H₄(CO)₃M]₂Zn (M=Mo,W;R=Co₂Me,CO₂Et),while the M-Hg-Mcompounds carrying an electron-releasing substituent Ron cyclopentadienyl ring [η⁵-RC₅H₄(CO)₃M]₂Hg(M=Me, Et) failed to react with Zn powder under the similar conditions to afford the corresponding M-Zn-Mcompounds[η⁵-RC₅H₄(CO)₃M]₂Zn (M=Mo,W;R=Me,Et). These trimetallic compounds [η⁵-RC₅H₄(CO) ₃M]₂Zn (M=Mo,W;R=CO₂Me,CO₂Et)obtained are white and air-sensitive solids,soluble in high polar solvents such as THF,DMSOand.acetone,which have been fully char acterized by elementary analysis,IR,¹H NMRand MStechniques. Interestingly,the com pound [η⁵-RC₅H₄(CO)₃M]₂Zn(M=Mo,CO₂Et) was shown to react with CDCl₃ during₁H NMRdetermination to give the corresponding organometallic halide [η⁵-EtO₂CC₅H₄·(CO)₃MoCl.

Key words: Heterotrimetallic compound, Hg/Zn exchange reaction, Synthesis, Structural characterization

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SONG Li-Cheng, DONG Yu-Bin, TAO Zhi-Fu, HU Qing-Mei. Studies on Linear Heterotrimetallic M-E-M(M=Mo,W;E=Hg,Zn) Compounds──Synthesis,Properties and Structural Characterization of [η⁵-RC₅H₄(CO)₃M]₂Zn(M=Mo,W;R=CO₂Me,CO₂Et)[J]. Chem. J. Chinese Universities, 1996, 17(12): 1878.

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Studies on Linear Heterotrimetallic M-E-M(M=Mo,W;E=Hg,Zn) Compounds──Synthesis,Properties and Structural Characterization of [η⁵-RC₅H₄(CO)₃M]₂Zn(M=Mo,W;R=CO₂Me,CO₂Et)

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