Urea-bridged diferrocene: structural, electrochemical, and spectroelectrochemical studies

被引：0
|
作者：
Zhong-Liang Gong [1 ,2 ,3 ]
Yu-Wu Zhong [1 ,2 ,3 ]
机构：
[1] Beijing National Laboratory for Molecular Sciences
来源：
Science China(Chemistry) | 2015年 / 09期
基金：
中国国家自然科学基金;
关键词：
mixed-valent compounds; ferrocene; electrochemistry; urea; spectroelectrochemistry;
D O I：
暂无
中图分类号：
O627.81 [];
学科分类号：
070303 ; 081704 ;
摘要：
Urea-bridged diferrocene derivatives N,N?-diferrocenylurea(1) and N,N?-dimethyl-N,N?-diferrocenylurea(2) were prepared and characterized. Single-crystal X-ray analysis shows that Compound 1 has a trans-trans linear conformation whereas Compound 2 has a trans-cis conformation. Both compounds display two consecutive redox couples with, respectively, E1/2 of +0.29 and +0.42 V vs. Ag/Ag Cl for 1 and +0.31 and +0.50 V for 2. Spectroelectrochemical studies show the presence of distinct intervalence charge transfer(IVCT) transitions for the one-electron-oxidized mixed-valent Compound 1+, with an estimated electronic coupling parameter of 190 cm?1. By contrast, the one-electron-oxidized Compound 2+ shows much weaker IVCT transitions.
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页码：1444 / 1450
页数：7
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