摘要
１，２－二（三甲硅基环戊二烯基）四甲基二硅烷与Ｆｅ（ＣＯ）５在二甲苯中于１０５～１１０℃反应除分离到少量标题化合物（Ｍｅ２ＳｉＳｉＭｅ２）［η－（３－Ｍｅ３ＳｉＣ５Ｈ３Ｆｅ（ＣＯ）］２（μ－ＣＯ）２（５）外，主要是生成了脱ＭｅＳｉＳｉＭｅ２）［η－Ｃ５Ｈ４Ｆｅ（ＣＯ）２］（μ－ＣＯ）２（１）及１的热重排异构体［Ｍｅ２ＳｉＣ５Ｈ４－Ｆｅ（ＣＯ）２］２（２）。将５的二甲苯溶液加热回流１８ｈ。
A small amount of the title compound 5(5%)and a desilylated complex(Me_2SiSiMe_2)[C_5H_4Fe(CO)]_2(μ-CO)_2(1)(3%)and its rearrangement isomer[Me_2Si_C_5H_4Fe(CO)_2]_2(2)(16%) were obtained from the reaction of 1,2-bis(3-trimethylsilylcyclopentadienyl)tetramethyldisilane with Fe (CO)_5 at 105 110℃.When a xylene solution of 5 was refluxed for 18h, compound [Me_2Si(3-Me_3Si-C_5H_3)Fe(CO)_2]_2(6), as a rearrangement isomer of 5 was obtained in 58% yield.It was proved that desilylation of Me_3Sioccured in the process of preparing 5 and desilylation is related to the(Me_2SiSiMe_2)-bridge of the reactant.The crystal structure of 5 was determined by X-ray diffraction, The crystal is monoclinic,space group P2_1/m with a=0.6780(1)nm,b=2.2303(9)nm,c=0.9988(1)nm,β=98.96(1)°,V=1.496 nm￣3,2=2,D_c=1.36 g/cm￣3.The final deviation factor R is0.044.
出处
《高等学校化学学报》
CSCD
北大核心
1994年第11期1629-1633,共5页
Chemical Journal of Chinese Universities
基金
国家自然科学基金
国家教育委员会博士学科点基金
关键词
四羰基二铁
衍生物
热重排反应
Bis(3-trimethylsilylcyclopentadienyl) tetramethyldisilane
Thermal rearrangement reaction
Desilylation
