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Cp_2Yb·2THF(Cp=环戊二烯基)与环戊二烯基钠(CpNa)在四氢呋喃(THF)中按1︰1的摩尔比于40℃下反应2h,原位形成的阴离子型二价茂镱配合物再与新蒸的环戊二烯(Cp-H)按1︰2.5的摩尔比于40℃下继续反应48h,经分离得到了阴离子型的三价镱配合物[NaYbCp_4(THF)_3](1).晶体结构测定表明配合物1具有聚合物主链的结构,即通过桥联Cp基团以η~5,η~5方式将Cp_3Yb·THF与Na(THF)_2二个结构单元联结在一起,进而在分子间形成一维无限的聚合物链结构.
The reaction of Cp_2Yb · 2THF (Cp = cyclopentadienyl) with cyclopentadienyl sodium (CpNa) in tetrahydrofuran (THF) at a molar ratio of 1: 1 at 40 ° C for 2h resulted in the formation of the anionic divalent The ytterbium complex was further reacted with freshly distilled cyclopentadiene (Cp-H) at a molar ratio of 1︰2.5 for 48h at 40 ° C to obtain an anionic trivalent ytterbium complex [NaYbCp_4 (THF) _3] (1). The crystal structure determination showed that the complex 1 has the structure of the main chain of the polymer, that is, by bridging the Cp group in η ~ 5, η ~ 5 way Cp_3Yb · THF and Na The units are linked together to form an infinite one-dimensional polymer chain structure between molecules.