摘要
测定了(p-CH_3OC_6H_4)_2TeO存在下M_2(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M_2(CO)_(10)和(p-CH_3OC_6H_4)_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(CH_3)_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(CH_3)_3NO和(p-CH_3OC_6H_4)_2TeO存在下影响M_2(CO)_(10)的CO取代反应速率的因素。
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.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
1993年第4期548-551,共4页
Chemical Journal of Chinese Universities
基金
国家自然科学基金
关键词
氧原子转移
动力学
金属羰基化物
Mn2(CO)10, Re2(CO)10, O-atom transfer reaction, Kinetic
