Synthesis, X-ray structure, electrochemical, and EPR studies of a pentacoordinated Mn(II) tetramethylcyclam complex

被引：30
|
作者：
Bucher, C
Duval, E
Barbe, JM
Verpeaux, JN
Amatore, C
Guilard, R
Le Pape, L
Latour, JM
Dahaoui, S
Lecomte, C
机构：
[1] Ecole Normale Super, Dept Chim, UMR 8640, F-75231 Paris 05, France
[2] Univ Bourgogne, Fac Sci Gabriel, LIMSAG, UMR 5633, F-21100 Dijon, France
[3] CEA Grenoble, UJF, CNRS, UMR 5046,DRFMC,SCIB,MP, F-38054 Grenoble 9, France
[4] Univ Nancy 1, Lab Cristallog & Modelisat Mat Mineraux & Biol, UPRESA 7036, Fac Sci, F-54506 Vandoeuvre Les Nancy, France
来源：
INORGANIC CHEMISTRY | 2001年 / 40卷 / 22期
关键词：
D O I：
10.1021/ic001472h
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The synthesis and full characterization of [(tmc)MnCl].X (where tine is 1,4,8,11-tetramethyl-1,4,8,1 1-tetraazacyclotetradecane and X is BPh4- or BF4-) are reported. The complex is of type I geometry. The manganese ion is pentacoordinated by the four tertiary nitrogen atoms of the macrocycle and one axial chloride. Variable-temperature magnetic susceptibility da ta indicate that the oxidation state of the manganese ion is +II with S = 5/2. The EPR spectrum exhibits unusual signals, with the main derivative line at g = 3.7 and transitions at more than 900 mT. The cyclic voltammogram of this derivative consists of two reversible systems at +1.14 and +1.36 V vs SCE related by a chemical equilibrium attributed to an isomerization process.
引用
收藏
页码：5722 / +
页数：6
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