INVESTIGATION OF THE ELECTROCHEMICAL PROPERTIES OF SUBSTITUTED TITANOCENE DICHLORIDES

被引：15
|
作者：
JOHNSTON, RF [1 ]
BORJAS, RE [1 ]
FURILLA, JL [1 ]
机构：
[1] MEMPHIS STATE UNIV,DEPT CHEM,MEMPHIS,TN 38152
来源：
ELECTROCHIMICA ACTA | 1995年 / 40卷 / 04期
关键词：
TITANOCENEDICHLORIDES; CYCLOVOLTAMMETRY STUDIES SUBSTITUENT EFFECTS;
D O I：
10.1016/0013-4686(94)00313-P
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The electrochemical properties of(eta(5)-C(5)Me(5))(2)TiCl2, (eta(5)-C(5)H(4)Me)(2)TiCl2, (eta(5)-C5H4Cl)(2)TiCl2, (eta(5)-C(5)H(4)CO(2)Me)(2)TiCl2, and (eta(5)-C5H5)(2)TiCl2 were examined in THF. All five species undergo two reduction processes. The first reduction processes of (eta(5)-C(5)H(4)Me)(2)TiCl2, (eta(5)-C5H4Cl)(2)TiCl2 and (eta(5)-C5H5)(2)TiCl2 are characterized as one-electron reversible reductions. The other two compounds have one-electron reduction followed by the loss of a chloride in a slow chemical reaction tie EC mechanism). Steric bulk of the pentamethyl derivative and the possibility of chelation in the carbomethoxy derivative enhance the loss of a chloride ion. An E(1/2) range of 550 mV was obtained for the five titanocenes and E(1/2)decreased to more negative values in the order: C(5)H(4)CO(2)Me > C5H4Cl > C5H5 > C(5)H(4)Me > C(5)Me(5).
引用
收藏
页码：473 / 477
页数：5
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