ELECTROCHEMICAL STUDIES OF IRON(III) SCHIFF-BASE COMPLEXES .2. DIMERIC MU-OXO[FE-III(N2O2)]O-2 COMPLEXES

被引：15
作者：
COSTES, JP
TOMMASINO, JB
CARRE, B
SOULET, F
FABRE, PL
机构：
[1] UNIV TOULOUSE 3, CHIM INORGAN LAB, F-31062 TOULOUSE, FRANCE
[2] UNIV TOULOUSE 3, CNRS, UP 8241, CHIM COORDINAT LAB, F-31077 TOULOUSE, FRANCE
[3] INST NATL POLYTECH TOULOUSE, F-31077 TOULOUSE, FRANCE
[4] FAC SCI TOURS, SYNTH & ETUD PHYSICOCHIM ORGAN LAB, F-37200 TOURS, FRANCE
来源：
POLYHEDRON | 1995年 / 14卷 / 06期
关键词：
D O I：
10.1016/0277-5387(94)00305-X
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The electrochemical reduction of mu-oxo bridged Fe-III dimers (L)Fe-O-Fe(L), where L is a Schiff base, has been investigated in aprotic solvents by cyclic voltammetry and coulometry with UV-vis spectroscopy. Three complexes deriving from Schiff base ligands with N2O2 environments are described. The reduction of (L)Fe-III-O-Fe-III(L) occurs at a potential around -1 V/SCE and releases the monomeric Fe-II(L) complex. A mechanism is proposed using high speed cyclic voltammetry. The reduction pattern is affected by dioxygen through the high reactivity of Fe-II(L). These mu-oxo bridged Fe-III dimers (L)Fe-O-Fe(L) can also be cleaved by Cl- addition and yield the monomeric Fe-III(L) complexes. Finally, the Fe-O bond is not so strong because it cleaves either by electrochemical reduction or by chemical addition of Cl-.
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收藏
页码：771 / 780
页数：10
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