四甲基二硅桥联茚基环戊二烯基四羰基二铁的合成、结构及热重排反应

Synthesis, Structure and Thermal Rearrangement of [η~5,η~5-(1-C_9H_6)Me_2SiSiMe_2C_5H_4]Fe_2(CO)_4

ClMe2 SiSiMe2 Cl顺序与茚基锂和环戊二烯基锂作用 ,生成 (1 C9H7)Me2 SiSiMe2 C5H5.后者进一步与五羰基铁反应 ,得到硅硅桥联茚基环戊二烯基化合物 [η5,η5 (1 C9H6)Me2 SiSiMe2 C5H4]Fe2 (CO) 4 (2 ) .化合物 2在加热条件下发生重排反应 ,给出硅硅键和铁铁键复分解产物 Me2 Si(η5 1 C9H6)Fe(CO) 2 SiMe2 (η5 C5H4)Fe(CO) 2 (3 ) .利用X射线衍射法 ,测定了 2和

The reaction of ClMe 2SiSiMe 2Cl in turn with indenyllithium and cyclopentadienyllithium afforded (1-C 9H 7)~Me 2SiSiMe 2C 5H 5. The latter reacted subsequently with Fe(CO) 5 giving the Si—Si bond-bridged indenyl and cyclopentadienyl complex [η 5,η 5-(1-C 9H 6)Me 2SiSiMe 2C 5H 4]Fe 2(CO) 4 (2). Complex 2 underwent the rearrangement reaction under thermal conditions to give a product Me 2Si(η 5-1-C 9H 6)Fe(CO) 2SiMe 2(η 5-C 5H 4)Fe(CO) 2 (3) through metathesis of the Si—Si and Fe—Fe bonds. The molecular structures of 2 and 3 have been determined by X-ray diffraction methods.