192517-12-7Relevant academic research and scientific papers
A new preorganized tridentate ligand bearing three indolethiolate groups. Preparation of 3:1 subsite-differentiated Fe4S4 clusters
Walsdorff, Christian,Saak, Wolfgang,Pohl, Siegfried
, p. 1857 - 1862 (2007/10/03)
1,3,5-Triethyl-2,4,6-tris(3-sulfanylindolylmethyl)benzene (TriSH3) has been prepared in three steps from 3-sulfanylindole and 1,3,5-tris(bromomethyl)-2,4,6-triethylbenzene.X-Ray analysis and NMR spectroscopy demonstrated it is highly preorganized for co-operation to three subsites of a Fe4S4 cluster core.The clusters 2 and 2 were obtained by reaction of 2 with TriSH3 under dynamic vacuum followed by addition of Br2 and substitution of bromide with PhS- respectively.The latter was characterized by X-ray structure analysis.No crystallographic symmetry is imposed on the cluster anion and the cluster core exhibits the tetragonal distortion typical of tetrathiolate substituted Fe4S4 cores.This implies that the trithiolate ligand TriS3- is sufficiently rigid to guarantee co-ordination to a single cluster core, while it is still flexible enough to match the preferred core distortion.
