One-electron activation and coupling of ethene by rhodium(II) porphyrins: observation of an .eta.2-ethene-metalloradical complex
One-electron activation and coupling of ethene by rhodium(II) porphyrins: observation of an .eta.2-ethene-metalloradical complex
复制标题
铑(II)卟啉对乙烯的单电子活化和偶联：eta2-乙烯金属自由基络合物的观察
DOI：
10.1021/ja00043a048
复制
发表时间：
1992
影响因子：
15
通讯作者：
B. Wayland
中科院分区：
文献类型：
--
作者：
A. G. Bunn;B. Wayland
这些Ru-Co体系中的BET过程具有非常小的活化障碍(AG*（称为）< 300 cm'1；见表1)。简单的电子转移模型表明BET过程应该比观察到的快1000倍（表1）。简单的氰桥、Fe-Ru和Ru-Ru（表1）体系，在没有电子延迟的情况下，表现出更快的BET速率。因此，Ru-Co体系的kBET相对较小的观测值暗示了kc1~的电子延迟因子
The BET processes in these Ru-Co systems have very small activation barriers (AG*(caled)< 300 cm'1; see Table I). Simple electron-transfer modelssuggest that the BET process should be about 1000 timesfaster than observed (Table I). Simple cyano-bridged, Fe-Ru and Ru-Ru (Table I) systems, in which no electronic retardation is expected, exhibit much faster BET rates. 3· 4 Thus, the relatively small observed values of kBET for the Ru-Co systems implicates an electronic retardation factorof kc1~