کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1307226 | 975129 | 2008 | 8 صفحه PDF | دانلود رایگان |
A series of N-substituted indole-3-thiols, synthesized by sequential alkylation, thiouronium salt formation, and hydrolysis, are used to generate a novel family of [4Fe–4S] clusters. The redox transitions of the clusters deviate from those of other [4Fe–4S] cluster families, with half-wave potentials lying in a range midway between those of [4Fe–4S] clusters bound by aliphatic thiolate ligands and those bound by thiophenolate-based ligands. In UV–vis spectroscopy, the new cluster family shows absorption maxima that are among the most red-shifted reported thus far in [4Fe–4S] cluster chemistry. The indole-3-thiolate ligand thus leads to a highly specific and uncommon combination of [4Fe–4S] cluster properties, which can be fine-tuned by facile derivatization at the indole nitrogen atom.
A series of N-substituted indole-3-thiols is synthesized and used to generate a novel family of [4Fe–4S] clusters. Both the redox potentials of the clusters and their UV–vis absorptions deviate from those of previously known [4Fe–4S] cluster classes. Fine-tuning of the electrochemical, spectroscopic, and physical characteristics of the clusters is possible by means of substitution at the indole nitrogen atom.Figure optionsDownload as PowerPoint slide
Journal: Inorganica Chimica Acta - Volume 361, Issue 7, 20 May 2008, Pages 1811–1818