高等学校化学学报 ›› 1996, Vol. 17 ›› Issue (12): 1878.

• 论文 • 上一篇    下一篇

线型异核三金属M-E-M(M=Mo,W;E=Hg,Zn)化合物的研究──[η5-RC5H4(CO)3M]2Zn(M=Mo,W;R=CO2Me,CO2Et)的合成、性质及结构

宋礼成, 董育斌, 陶志福, 胡青眉   

  1. 南开大学化学系, 天津, 300071
  • 收稿日期:1995-12-20 出版日期:1996-12-24 发布日期:1996-12-24
  • 通讯作者: 宋礼成,男,58岁,教授.
  • 作者简介:宋礼成,男,58岁,教授.
  • 基金资助:

    国家自然科学基金;中国科学院上海有机化学研究所金属有机开放实验室资助

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)

SONG Li-Cheng, DONG Yu-Bin, TAO Zhi-Fu, HU Qing-Mei   

  1. Department ot Chemistry, Nankai University, Tianjin, 300071
  • Received:1995-12-20 Online:1996-12-24 Published:1996-12-24

摘要: 研究了含汞三金属化合物[η5-RC5H4(CO)3M]2Hg(M=Mo,W;R=Me,Et,CO2Me,CO2Et)与锌粉的置换反应,发现当取代基R为给电子的Me和Et时底物不发生反应,而取代基R为拉电子的CO2Me和CO2Et时,则底物中的汞可被锌置换,生成带有机官能团的三金属化合物[η5-RC5H4(CO)3M]2Zn;另外,还发现R为CO2Et,M为Mo的产物[η5-RC5H4(CO)3M]2Zn可在室温下被分解为相应的氯代物η5-EtO2CC5H4MoCl.

关键词: 异核三金属化合物, 汞/锌交换反应, 合成, 结构表征

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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