本文用SCF ab initio分子轨道法,在3-21G基组下对反应CH_2(~1A)+CH_2N_2→C_2H_4+N_2进行了研究。提出了该反应的机理由两步组成的现点:第一步是中间可产物C_2H_4N_2的生成;第二步是C_2H_4N_2的分解。并指出第二步是该反应的速度控制步...本文用SCF ab initio分子轨道法,在3-21G基组下对反应CH_2(~1A)+CH_2N_2→C_2H_4+N_2进行了研究。提出了该反应的机理由两步组成的现点:第一步是中间可产物C_2H_4N_2的生成;第二步是C_2H_4N_2的分解。并指出第二步是该反应的速度控制步骤,同时给出了速控步骤的ΔS°、ΔH°、ΔG°、平衡常数K和速度常数κ。展开更多
The solvent-free mechanochemical reaction and the liquid-phase reaction of C60 with ethyl 2-diazopropionate prepared in situ or preformed from alanine ethyl ester hydrochloride and sodium nitrite have been investigate...The solvent-free mechanochemical reaction and the liquid-phase reaction of C60 with ethyl 2-diazopropionate prepared in situ or preformed from alanine ethyl ester hydrochloride and sodium nitrite have been investigated. Methanofullerene 1 and fulleroids 2 and 3 from these reactions were obtained, meanwhile the pyrazoline intermediate was not observed. Fulleroids 2 and 3 can be converted to methanofullerene 1 in refluxing toluene.展开更多
文摘本文用SCF ab initio分子轨道法,在3-21G基组下对反应CH_2(~1A)+CH_2N_2→C_2H_4+N_2进行了研究。提出了该反应的机理由两步组成的现点:第一步是中间可产物C_2H_4N_2的生成;第二步是C_2H_4N_2的分解。并指出第二步是该反应的速度控制步骤,同时给出了速控步骤的ΔS°、ΔH°、ΔG°、平衡常数K和速度常数κ。
文摘The solvent-free mechanochemical reaction and the liquid-phase reaction of C60 with ethyl 2-diazopropionate prepared in situ or preformed from alanine ethyl ester hydrochloride and sodium nitrite have been investigated. Methanofullerene 1 and fulleroids 2 and 3 from these reactions were obtained, meanwhile the pyrazoline intermediate was not observed. Fulleroids 2 and 3 can be converted to methanofullerene 1 in refluxing toluene.