| (p-CH3OC6H4)2TeO存在下M2(CO)10(M=Mn,Re)的CO取代反应动力学研究 |
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| 引用本文： | 高忆慈,申建坤,史启祯.(p-CH3OC6H4)2TeO存在下M2(CO)10(M=Mn,Re)的CO取代反应动力学研究[J].高等学校化学学报,1993,14(4):548. |
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| 作者姓名： | 高忆慈 申建坤 史启祯 |
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| 作者单位： | 兰州大学化学系, 兰州 730000 |
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| 摘 要： | 测定了(p-CH3OC6H4)2TeO存在下M2(CO)10(M=Mn,Re)的CO取代反应速率及活化参数。其表观速率常数分别与M2(CO)10和(p-CH3OC6H4)2TeO的浓度的一次方成正比。本文所建议的缔合机理与前人用(CH3)3NO作氧原子转移试剂的相应反应所提出的机理相似。讨论了在(CH3)3NO和(p-CH3OC6H4)2TeO存在下影响M2(CO)10的CO取代反应速率的因素。
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| 关 键 词： | Mn2(CO)10 Re2(CO)10 氧原子转移反应 动力学 |
| 收稿时间： | 1992-07-07 |
Kinetics of CO Substitution of M_2(CO)_(10)(M=Mn,Re) with Py in the Presence of (p-CH_2OC_2H_4)_2TeO |
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| GAO Yi-Ci,SHEN Jian-Kun,SHI Qi-Zhen.Kinetics of CO Substitution of M_2(CO)_(10)(M=Mn,Re) with Py in the Presence of (p-CH_2OC_2H_4)_2TeO[J].Chemical Research In Chinese Universities,1993,14(4):548. |
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| Authors: | GAO Yi-Ci SHEN Jian-Kun SHI Qi-Zhen |
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| Institution: | Department of Chemistry, Lanzhou University, Lanzhou, 730000 |
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| Abstract: | Reported are the rates of reaction and activation parameters for CO substitution reaction of M2(CO)10(M = Mn,Re) with Py in the presence of (p-CH3OCeH4)2TeO. The rate of reaction is the first order in concentrations of M2(CO)10 and of (p-CH3OC6H4)2TeO, but zero order in Py. One possible mechanism.is suggested for the reaction, which is similar to that proposed earlier for the corresponding reactions with (CH3)3NO as the O-atom transfer reagent. The difference of activities between (CH3)3NO and (p-CH3OC6H4)2TeO is discussed in terms of their basicity in this paper. |
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| Keywords: | Mn2(CO)10 Re2(CO)10 O-atom transfer reaction Kinetic |
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