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Co2(μ-C2ph2)(CO)6的取代反应动力学研究
Kinetic Study of Substitution Reaction of Co2(μ-C2ph2)(CO)6
【摘要】 <正> 有机膦的电子效应和空间效应有非常广泛的值域范围[1],这两种效应对配合物的行为影响极大[2,3],在反应动力学研究中,可直接影响甚至会决定化学反应的机理和速度[4]。Poē等[5]只研究了Co2(μ-C2ph2)(CO)6与几种锥角较小的膦配体进行取代反应的动力学,而对锥
【Abstract】 The kinetics of substitution reaction for Co2(μ-C2ph2)(CO)6 with P(OBu)3 and PCy3 in decalin at 55° was studied.It is found that the reactions under the atmosphere of N2 follow two different mechanisms: dissociation and association mechanism,and the reaction rate can be represented by the equation: kobs=k1+k2[L].In addition,the dependence oi lgk2 on the basicity and the size of entering ligands is also discussed.
【关键词】 μ-二苯乙炔-二(三羰基钴);
取代反应;
动力学;
【Key words】 μ-Diphenylacethylene-bis(tricarbonyl cobalt); Substitution reaction; Kinetics;
【Key words】 μ-Diphenylacethylene-bis(tricarbonyl cobalt); Substitution reaction; Kinetics;
【基金】 国家自然科学基金
- 【文献出处】 高等学校化学学报 ,Chemical Research In Chinese Universities , 编辑部邮箱 ,1992年10期
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