Heterometallic Trinuclear Carbonyl Sulfido Clusters and the Tetranuclear Intermediate via Electrophilic Addition-Elimination Reaction  

作　　者：孙文华 杨世琰 汪汉卿 周全福 郁开北 

机构地区：[1]State Key Laboratory for Oxo Synthesis and Selective Oxidation,Lanzhon Institute of Chemical Physics,Academia Sinica,Lanzhou 730000,PRC [2]and State Key Laboratory of Structural Chemistry,Fujian Institute of Research on Structure of Matter,Academia Sinica,Fuzhou 350002,PRC [3]Chengdu Center of Analysis and Measurement,Academia Sinica,Chengdu 610041,PRC

出　　处：《Science China Chemistry》1994年第12期1409-1420,共12页中国科学（化学英文版）

摘　　要：The reaction of HFe_2Co(CO)_9(μ_3-S)with(η~5-C_5H_4CH_3)Mo(CO)_3CI has been carried out in refluxing tetrahydrofuran(THF)to give out heterometallic trinuclear clusters(η~5-C_5H_4CH_3)MoFeCo- (CO)_8(μ_3-S)and(η~5-C_5H_4CH_3)_2Mo_2Fe(CO)_7(μ_3-S)by electrophilic addition-elimination reaction.Howev- er,(η~5-C_5H_4CH_3)Fe(CO)_2Cl reacted with HFe_2Co(CO)_9(μ_3-S)at room temperature to yield a tetranuclear cluster(η~5-C_5H_4CH_3)Fe_3Co(CO)_(11)(μ_4-S).The μ_4-S cluster could be used as an intermediate in confirmation of the mechanism of the electrophilic addition-elimination reaction.The syntheses,characterizations and X-ray crystal structures of these clusters are reported herein as well as the discussion on the reaction mecha- nism.The reaction of HFe₂Co（CO）₉（μ₃-S）with（η⁵-C₅H₄CH₃）Mo（CO）₃CI has been carried outin refluxing tetrahydrofuran（THF）to give out heterometallic trinuclear clusters（η⁵-C₅H₄CH₃）MoFeCo-（CO）₈（μ₃-S）and（η⁵-C₅H₄CH₃）₂Mo₂Fe（CO）₇（μ₃-S）by electrophilic addition-elimination reaction.Howev-er,（η⁵-C₅H₄CH₃）Fe（CO）₂Cl reacted with HFe₂Co（CO）₉（μ₃-S）at room temperature to yield a tetranuclearcluster（η⁵-C₅H₄CH₃）Fe₃Co（CO）₁₁（μ₄-S）.The μ₄-S cluster could be used as an intermediate in confirmationof the mechanism of the electrophilic addition-elimination reaction.The syntheses,characterizations andX-ray crystal structures of these clusters are reported herein as well as the discussion on the reaction mecha-nism.

关 键 词：electruphilic ADDITION-ELIMINATION HETEROMETALLIC clusters CARBONYL crystal structure reaction mechanism. 

分 类 号：O631.2[理学—高分子化学]