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

被引：31

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.

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页码：5722 / +

页数：6

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