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通过过渡金属络合物来活化惰性小分子如N_2、CO、CO_2等是一个行之有效的方法.由于聚集双键化合物如RCCO、RNCO、RNCS和CO_2的分子结构非常相似,可以互相比较.因此,许多化学家对过渡金属络合物与各种含杂原子的聚集双键化合物的反应发生兴趣,做了不少研究工作.但关于前区过渡金属氢化物与聚集双键化合物的反应报道甚少.本文研究了Cp_2Zr(H)Cl与RNGS(R=C_6H_5,β-C_(10)H_7)的反应,利用元素分析、IR、~1H和~(13)C NMR以及HPLC等方法对产物结构进行了分析鉴定,得到四种新的含杂原子的小环锆络合物在此基础上,我们用ESR方法考察了Cp_2Zr(Ⅱ)Cl与C_6H_5NCS的反应过程,发现有ESR信号出
Activation of inert small molecules such as N 2, CO, CO 2, etc. by transition metal complexes is an effective method because the molecular structures of aggregated double bond compounds such as RCCO, RNCO, RNCS and CO 2 are very similar and can be compared with each other , Many chemists have been interested in the reaction of transition metal complexes with a variety of heteroatom-containing double bond-forming compounds, and many studies have been reported on the reaction of transition metal hydride with aggregated double bond compounds in the front region The reaction of Cp_2Zr (H) Cl with RNGS (R = C_6H_5, β-C_ (10) H_7) has been studied in this paper. The structure of the product has been characterized by elemental analysis, IR, ~ 1H and 13 C NMR and HPLC On the basis of this, we have investigated the reaction process of Cp_2Zr (Ⅱ) Cl and C_6H_5NCS by ESR method and found that there are ESR signals