高等学校化学学报

高等学校化学学报 ›› 1995, Vol. 16 ›› Issue (5): 678.

• 论文 • 上一篇    下一篇

含2,4-二硫代乙内酰脲分子片卡宾铁羰基簇合物的合成和结构

刘登奎, 成庆民, 胡襄, 刘启旺, 刘树堂   

  1. 内蒙古大学化学系, 呼和浩特, 010021
  • 收稿日期:1994-06-25 修回日期:1994-10-14 出版日期:1995-05-24 发布日期:1995-05-24
  • 通讯作者: 刘树堂
  • 作者简介:刘登奎,男,28岁,硕士,工程师.
  • 基金资助:

    国家自然科学基金;中国科学院福州物构所结构化学开放实验室资助

Syntheses and Structures of Trinuclear Iron Carbonyl ClustersContaining Carbenes from Cleaving of 2,4-Dithiohydantoins

LIU Deng-Kui, CHENG Qing-Min, HU Xiang, LIU Qi-Wang, LIU Shu-Tang   

  1. Department of Chemistry, Inner Mongolia University, Huhehaote, 010021
  • Received:1994-06-25 Revised:1994-10-14 Online:1995-05-24 Published:1995-05-24

PDF (PC)

被引次数

4

摘要： Fe3(CO)12与5个2,4-二硫代乙内酰脲(这里有图片199505-678-1.gif)反应制得通式为Fe3(CO)8(u3-S)2(L)含卡宾配体的5个新铁羰基联合物(1～5),对其进行了元素分析、IR、1HNMR和MS表征,并用X射线衍射法测定了簇合物3的晶体和分子结构,表明2,4-二硫代乙内酰脲分子片配位基:的卡宾碳具有sp2成键特征,其C卡宾-Fe键长0.1898nm,3的分子几何构型维持母体物Fe3(CO)9(u3-S)2的形状,其中卡宾取代了四方锥分子骨架基底平面Fe(1)S(1)Fe(3)S(2)的Fe(1)原子上轴向位置的一个端羰CO。

关键词: 铁羰基簇合物, 金属卡宾, 2,4-二硫代乙内酰脲碎片

Abstract: The reaction of Fe3(CO)12with 2, 4-dithiohydantoins SCNHC(R1)(R2)C(S)NH(SL) yields the known Fe3(CO)9(u3-S)2and the five new open triangular iron carbonyl clus ters Fe3(CO)8(u3-S)2(L)1-5. It was found that the coordinated ligands in the clusters 1-5 besides eight terminal COligands are two sulfito Satoms and a heterocyclic carbene Lwhich was formed from the cleavage of the ligand precursor SL. The formulas and structures of these clusters were characterized by elementary analysis, IR, 1HNMR and MS techniques and the molecular structure of 3 was determined by X-ray diffraction analysis. The sp2bond ing character of the carbon (carbene) atom of fragmental 2,4-dithiohydantoin: CNHC(CH3)2C(S)NH shown clearly in 3 and the Ccarh.-Fe bond length of 0. 1898 nm cor responds to other iron stabilized carbenes. This carbene ligand displaced a terminal axial CO of the basal Fe(1) atom and locates in a vertical position to the Fe (1)S(1)Fe(3)S(2) distort ed basal plane. The geometry of Fe3(CO)9(u3-S)2has been maintained in 3, but some of Fe-S and Fe-Fe bond lengths have been changed.

Key words: Iron carbonyl cluster, Metal carbene, Fragments of 2,4-dithiohydantoin

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