Citation: Wu Bao-Shan, Liu Qi-Wang, Hu Xiang, Su Hai-Quan, Liu Shu-Tang, Jin Xiang-Lin. Syntheses and Crystal Structure of Tetracobalt Carbonyl Clusters Co4(CO)8(μ-CO)2(μ4-PSR)2[J]. Acta Physico-Chimica Sinica, 1994, 10(10): 882-886. doi: 10.3866/PKU.WHXB19941004
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
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．
English
Syntheses and Crystal Structure of Tetracobalt Carbonyl Clusters Co4(CO)8(μ-CO)2(μ4-PSR)2
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.
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