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二(硅基取代环戊二烯基)四羰基二铁化合物[η~5-RC_5H_4Fe(CO)]_2(μ-CO)_2(R=SiMe_3,1;Si_2Me_5,2)与HgCl_2反应得到预期的Fe—Fe键被断裂的铁氯化物6(R=SiMe_3)和8(R=Si_2Me_5)及铁氯汞化物5(R=SiMe_3)和7(R=Si_2Me_5).硅桥连的类似物R~1[η~5-C_5H_4Fe(CO)]_2(μ-CO)_2(R~1=SiMe_2,3;SiMe_2OSiMe_2,4)由上述反应除得到预期产物外,还分离到相应的歧化产物R~1[η~5-C_5H_4Fe(CO)_2HgCl]_2(R~1=SiMe_2,10;SiMe_2OSiMe_2,13)与R~1[η~5-C_5H_4Fe(CO)_2Cl]_2(R~1=SiMe_2,11;SiMe_2OSiMe_2,14),讨论了歧化产物的生成原因.对产物5～14的结构用元素分析、IR,~1H NMR进行了表征,并测定了5的晶体结构.5为单斜晶系,空间群P2_1/n,α=1.1648(3),b=0.7484(4),c=1.6823(5)nm,β=106.55(2)°,V=1.405(2)nm~3,Z=4,D_x=2.29g·cm~(-3).
The reaction of bis (silicon-substituted cyclopentadienyl) tetracarbonyl diiron with HgCl 2 [η 5-RC 5 H 4 Fe (CO)] _ 2 (μ-CO) 2 (R = SiMe 3,1; Si 2 Me 5,2) (R = SiMe_3) and 8 (R = Si_2Me_5) and iron chlorihydrides 5 (R = SiMe_3) and 7 (R = Si_2Me_5) with Fe- In addition to the desired product, the corresponding disproportionation product R ~ 1 was also isolated from the above reaction [η~5-C_5H_4Fe (CO)] _2 (μ-CO) _2 (R ~ 1 = SiMe_2,3; SiMe_2OSiMe_2,4) [η ~ 5-C_5H_4Fe (CO) _2HgCl] _2 (R ~ 1 = SiMe_2,10; SiMe_2OSiMe_2,13) and R ~ 1 [η ~ 5-C_5H_4Fe (CO) SiMe_2OSiMe_2, 14), the formation of disproportionation products was discussed.The structure of products 5 ~ 14 was characterized by elemental analysis, IR and ~ 1H NMR and the crystal structure of 5 was determined.5 monoclinic space group (2) nm, V = 1.405 (2) nm ~ 3, Z = 4, D_x = 1.1683 (4), c = 1.6823 (5) nm, β = 106.55 2.29g · cm ~ (-3).