【摘要】 <正> 含Ⅵ主族的混合金属原子簇化合物可作为重要的催化剂,这种催化剂在均相催化方面,由于异核原子簇中不同金属具有不同的反应性,可能表现出独特的催化性能,特别是Mo-Fe-S原子簇化合物,除了可作为加氢脱硫的催化剂外,又可能是固氮酶活性中心的模型物,更多还原

【Abstract】 (η⁵-C₅H₅)₄Mo₄Fe₂（μ₃-S）₅（CO）₅ have been prepared from （η⁵-C₅H₅）₂Mo₂（CO）₆ and Fe₈S₂（CO）₉ under toluene reflux for 14.5 hrs.The crystal and molecular structures of （η⁵-C₅H₅）₄Mo₄Fe₂（μ₃-S）₅（CO）₅ were studied by X-ray structure analysis. The Crystallographic data are as follows: monoclinic, space group P2₁/n, unit cell: a=10.589（4）, b=17.260（4）, c= 18.963（4）, β=101.44（2）°, V=3396.7³, D_c=2.06gcm^-3 for Z=4, X-ray data were obtained over the range of 2°<2θ<50° via the ω-2θ scan mode with MoKa radiation on an Enraf-Nonius CAD4 diffraetometer. The structure was solved by direct method （MULTAN） and refined by full matrix least-squares techniques for 3993 reflections with I>2σ（I）, The final R=0.081. Figure 1 illustrates the configuration of the molecule （η⁵-C₅H₅）₄Mo₄Fe₂（μ₃-S）₅（CO）₅, composing of a cubane-like （FeMo₃S₄） core and a trigonal pyramid （MoFe₂S）core, which linked by sharing Fe（1） atom.更多还原