期刊
INORGANIC CHEMISTRY
卷 54, 期 13, 页码 6257-6266出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.inorgchem.5b00449
关键词
-
资金
- Agence Nationale de la Recherche [ANR 2010 BLAN 703, ANR-11-LABX-0003-01]
- Region Rhone-Alpes [CIBLE 07 016335, CIBLE 08 019180]
We have previously investigated cis/trans isomerization processes in phenoxido-bridged mixed-valent (FeFeIII)-Fe-II complexes that contain either one aniline or one anilide ligand. In this work, we compare the properties of similar complexes bearing one terminal protic ligand, either aniline or 1H-benzimidazole. Whatever the ligand, H-1 NMR spectroscopy clearly evidences that the complexes are present in CH3CN as a mixture of cis- and trans-isomers in a close to 1:1 ratio. We show here that addition of NEt3 indeed allows the deprotonation of these ligands, the resulting complexes bearing either anilide or benzimidazolide that are coordinated to the ferric site. The latter are singular examples of a high-spin ferric ion coordinated to a benzimidazolide ligand. Whereas the trans-isomer of the anilide complex is the overwhelming species, benzimidazolide species are mixtures of cis- and trans-isomers in equal proportions. Moreover, cyclic voltammametry studies show that (FeFeIII)-Fe-III complexes with 1H-benzimidazole are more stable than their aniline counterparts, whereas the reverse is observed for the deprotonated species.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据