| 希夫碱钴配合物的吸氧热力学及其自氧化作用 |
| THERMODYNAMICS OF UPTAKE OXYGEN OF COMPLEX FROM BIS-SCHIFF BASE C20H22N2O4 AND COBALT(Ⅱ)AND IT'S SELF OXIDATION |
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| 摘要: 本文合成了一个新的双Schiff碱钴配合物,并研究了该配合物在吡啶溶液中的吸氧过程热力学.在4—24℃范围内,吸氧摩尔比为1:1,吸氧过程热力学参数为:△H=-26.8(±0.5)kJ/mol,△S=-89.2(±1.8)J/mol·K.在30—45℃范围内,吸氧摩尔比为2:1,吸氧过程的热力学参数为:△H=-172.6(±9.14)kJ/mol,△S=-517.3(±29.4)J/mol·K.温度超过45℃,自氧化作用变得明显,配合物中苄羟基被氧化为醛基.提出了可能的氧化反应机理. |
| 关键词: 钴配合物 Schiff碱 热力学 |
| 基金项目: |
| Abstract: A new complex from bis-schiff base and Cobalt(Ⅱ)was synthesized. The process of uptake oxygen of the complex in pyridine solvent was stu-died by means of gas volumetric apparatus.Between 4-24℃, it is faster to reach equilibrium of uptake oxygen. The mole ratio of uptake oxygen is 1:1. Thermodyhamic parameters of uptake oxygen process are: △H=- 26,8(±0.5)kJ/mol., △S=- 89.2(± 1.8)J/mol·K. Between 30.0-45.0℃, the mole ratio of uptake oxygen is 2:1. Thermo-dynamic parameters are: △H=- 172.6(±9.14)kJ/mol. △S=-517.3(±29.4)J/mol·K. Above 45℃, self-oxidation became obvious. Oxidation product is aldehyde that was identified by hydrolysis with HCL solution and IR. A possible oxidation mechanics was suggested. |
| Keywords: cobalt complex schiff base thermodynamics |
| 投稿时间：1987-04-06 |
| 摘要点击次数: 1718 |
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| 徐正,陆军农,游效曾,梁任又,金嗣召.希夫碱钴配合物的吸氧热力学及其自氧化作用[J].无机化学学报,1987,3(4):113-120. |
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