物理化学学报 >> 1994, Vol. 10 >> Issue (10): 882-886.doi: 10.3866/PKU.WHXB19941004

研究论文 上一篇    下一篇

四核钴羰基簇合物Co4(CO)8(μ-CO)2(μ4-PSR)2的合成和晶体结构

吴宝山, 刘启旺, 胡襄, 苏海全, 刘树堂, 金祥林   

  1. 北京分子动态及稳态结构国家实验室，内蒙古大学化学系，呼和浩特 010021|北京大学化学系，北京 100871
  • 收稿日期:1993-04-27 修回日期:1993-10-14 发布日期:1994-10-15
  • 通讯作者: 刘启旺

Syntheses and Crystal Structure of Tetracobalt Carbonyl Clusters Co4(CO)8(μ-CO)2(μ4-PSR)2

Wu Bao-Shan, Liu Qi-Wang, Hu Xiang, Su Hai-Quan, Liu Shu-Tang, Jin Xiang-Lin   

  1. National Laboratory for Structural Chemistry of Unstable and Stable Species|The Department of Chemistry,Inner Mongolia University,Huhehaote 010021|The Department of Chemistry,Peking University,Beijing 100871
  • Received:1993-04-27 Revised:1993-10-14 Published:1994-10-15
  • Contact: Liu Qi-Wang

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摘要：

通过Co2（CO）8与二氯烷硫基磷RSPCI2［R＝-CH，-C2H5，-C（CH3）3，-（CH2）4CH3］反应，得到4个新簇合物．除用元素分析、IR、1HNMR和MS表征其结构外，还用X光衍射法测定了簇合物CO4（CO）8（μ-CO）2（μ4－PSC2H5）2小的单品结构. 该簇合物用单斜晶系，P21／C空间群．晶胞参数为α＝8.445（3），b＝8.562（3），c＝17.125（6）Å，β＝104.26（3）°；V＝1200．1Å3；Dc＝1．9379cm3;μ＝3．058mm－1；F（000）＝688．结构分析表明，四个Co原子形成平面矩形，两个PSR四重桥基分别在四钻平面上下盖帽构成Co4P2类八面体骨架，骨架为D2h点群对称性．PSR配体为4e供体，与四个钴原子成键．

关键词: 含烷基硫, 磷桥基配体, 四核钴羰基簇合物, 合成和结构

Abstract:

The title compounds Co4(CO)8(μ-CO)2 (μ4-PSR) [R=-CH3, -C2H5, -C(CH3)3,-(CHa)4CH3] were synthesized by the reaction of Co2(CO)8 with RSPCl2. They were characterized by IR, 1HNMR, elemental analysis. The crystal and molecular structure of Co4(Co)8(μ-CO)2 (μ4-PSC2H5) has been determined by single crystal diffraction method. Crystal data: monoclinic, space group P21 /c, with a=8-445(3), 6=8.562(3), c= 17.125(6)Å, β=104.26 (3)' 9 V=1200.1Å3, Z=2, Dc=1.937gcm-3. Its molecular structure contains an octahedral Co4P2 skeleton which consists of a rectangular four cobalt atoms core and the Co4 core is capped above and below by two quadruply bridging PSR ligands.

Key words: Alkyl sulfide, Phosphorus bridged ligand, Tetracobalt carbongl cluster, Syntheses and crystal structure