Syntheses and Characterizations of （η^5—C5H5）MoFeCo（CO）8（μ3—S）and （  

Syntheses and Characterizations of (η￣5-C_5H_5)MoFeCo(CO)_8(μ_3-S) and (η￣5-C_5H_5)_2Mo_2Fe(CO)_7(μ_3-S):X-ray Crystal Structure of (η￣5-C_5H_5)MoFeCo(CO)_8(μ_3-S)

作　　者：孙文华 郁开北 等 

机构地区：[1]StateKeyLaboratoryofOxoSynthesisandSelectiveOxidat [2]StateKeyLaboratoryofOxoSynthe

出　　处：《Chinese Journal of Structural Chemistry》1996年第5期382-386,共5页结构化学（英文）

摘　　要：ＳｙｎｔｈｅｓｅｓａｎｄＣｈａｒａｃｔｅｒｉｚａｔｉｏｎｓｏｆ（η~５－Ｃ_５Ｈ_５）ＭｏＦｅＣｏ（ＣＯ）_８（μ_３－Ｓ）ａｎｄ（η~５－Ｃ_５Ｈ_５）_２Ｍｏ_２Ｆｅ（ＣＯ）_７（μ_３－Ｓ）：Ｘ－ｒａｙＣｒｙｓｔａｌＳｔｒｕｃｔｕｒｅｏｆ（η~５－Ｃ_５Ｈ_...The heterometallic clusters(η￣5-C_5H_5)2MoFeCo(CO)_8(μ_3-S) (1) and (η￣5-C_5H_5)_2Mo_2Fe(CO)_7(μ_3-S) (2) were synthesized by the reaction of HFe_2Co(CO)_9(μ_3-S) (3) and (η￣5-C_5H_5)Mo(CO)_3Cl(4) in refluxing tetrahydrofuran under an atmosphere of nitrogen. The reaction mechanism was proposed as metal exchange with electrophilic addition-elimination via substitution. The title clusters were characterized by elemental analyses and IR spectroscopy,while the structure of cluster 1 was determined by X-ray crystallography. Cluster 1 crystallizes in the P2_1/n space group with a= 8. 016 (1), b=17. 625(2), c=12. 068(2),β=96. 15(1)°,V=1695.1(4),Z=4 and D_c=2. 08g/cm￣3.λ(MoKα)=0. 71073,μ=26. 78 cm-1,F(000)=1032.Structure solution and refinement were based on 2002 independent reflections with I≥3.0 σ(I) and converged at R=0. 025. The CoFeMo core in cluster 1 displays a triangle with a four-electron donating sulphur atom which caps the three metals.

关 键 词：合成 晶体结构 X射线 原子簇合物 羰基 反应机理 钼 铁 硫 钴 

分 类 号：O641.4[理学—物理化学] O76[理学—化学]