One-pot synthesis, physicochemical characterization and crystal structures of cis- and trans-(1,4,8,11-tetraazacyclotetradecane)dichloroiron(III) complexes

被引：34

作者：

Guilard, R ^{[1
]}

Siri, O ^{[1
]}

Tabard, A ^{[1
]}

Broeker, G ^{[1
]}

Richard, P ^{[1
]}

Nurco, DJ ^{[1
]}

Smith, KM ^{[1
]}

机构：

[1] UNIV CALIF DAVIS,DEPT CHEM,DAVIS,CA 95616

来源：

JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS | 1997年 / 19期

关键词：

D O I：

10.1039/a702775c

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The synthesis and characterization of cis-and trans-[Fe(cyclam)Cl-2](+) (cyclam = 1,4,8,11-tetraazacyclotetradecane) are described. The assignment of geometrical configuration to these complexes has been made on the basis of their infrared spectra in the 800-900 cm(-1) region. In addition, the molecular structures of the cis and trans derivatives were determined by X-ray diffraction. Both complexes have a d(5) electronic system, the cis and trans species being respectively in a high spin and a low spin configuration. These two isomers are fully characterized by electrochemistry and they are simultaneously observed in the reaction mixture by cyclic voltammetry. This study shows that the reactivity towards dioxygen of the two reduced isomers is different, and that the formation of the oxygenated species is not observed in some solvents.

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页码：3459 / 3463

页数：5

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