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本文研究了反应温度及LM中M的性质(其中M=Na或Li,L=-C_5Me_5或—C_3H_7C_5Me_4)对六氯二吡啶铈(IV)(C_5H_6N)_2CeCl_6和LM反应的影响。结果表明,无论采用LNa或LLi,在室温或是-78℃下反应,都得不到相应的Ce~(IV)有机络合物。此时,Ce~(IV)还原而得到Ce~(III)的取代环戊二烯衍生物。当NaC_5Me_5和(C_5H_6N)_2CeCl_6的摩尔比为3:1时,反应后可以得到中性的(C-5Me_5)CeCl_2·Py;当LiC_5Me_5和(C_5H_6N)_2CeCl_6的反应摩尔比提高到4:1时,可以分离到Li[(C_5Me_5)CeCl_3](Py)_2。
In this paper, the effects of reaction temperature and the properties of M in LM (where M = Na or Li, L = -C_5Me_5 or -C_3H_7C_5Me_4) on the reaction of cerium (IV) (C_5H_6N) _2CeCl_6 with hexachloropyridine were studied. The results show that the corresponding Ce ~ (IV) organic complexes can not be obtained by using either LNa or LLi at room temperature or -78 ℃. At this point, Ce ~ (IV) is reduced to give a substituted cyclopentadiene derivative of Ce ~ (III). When the mole ratio of NaC_5Me_5 and (C_5H_6N) _2CeCl_6 is 3: 1, the neutral (C-5Me_5) CeCl_2 · Py can be obtained. When the reaction molar ratio of LiC_5Me_5 and (C_5H_6N) _2CeCl_6 is increased to 4: 1, Li [(C_5Me_5) CeCl_3] (Py) _2 can be isolated.