Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1317203 | Journal of Inorganic Biochemistry | 2007 | 8 Pages |
Abstract
[2Fe2S] clusters with terminal N-ligation (His, Arg) and unique functions are increasingly recognized in biological systems. In this work three new [2Fe2S] clusters 1-3 with different 1,1â²-dipyrrolmethane derivatives as chelating terminal ligands have been prepared and fully characterized, including by X-ray crystallography: (NEt4)2[L2Fe2(μ-S)2] with LMe2C(C4H3N)2 (1), Ph2C(C4H3N)2 (2), (CH2)5C(C4H3N)2 (3). These systems represent rare examples of synthetic [2Fe2S] complexes with N-donor capping ligands. While geometric parameters as well as spectroscopic and electrochemical characteristics of the new complexes are as anticipated, the chelating nature of the terminal ligands in 1-3 imparts a relatively high stability that will be advantageous for reactivity studies of the [2Fe2S] core.
Related Topics
Physical Sciences and Engineering
Chemistry
Inorganic Chemistry
Authors
Joachim Ballmann, Xianru Sun, Sebastian Dechert, Eckhard Bill, Franc Meyer,