The X-ray structure of the pyochelin Fe3+ complex.
By X-ray structure analysis it could be shown that from the solution equilibrium of pyochelin I and II, differing in the stereochemistry at C-2" (1a and 1b), crystals of the Fe3+ complex of the steroisomer 1a are formed with a 1:1 metal-to-ligand ratio. Ligand sites are the carboxylate and the phenolate anions and the two nitrogen atoms. Two equivalent ferri-pyochelin moieties are held together by a hydroxy and an acetate unit which satisfy the remaining two coordination sites of Fe3+.
Schlegel
Karin
K
Institut für Organische Chemie, Universität zu Köln, Germany.
Lex
Johann
J
Taraz
Kambiz
K
Budzikiewicz
Herbert
H
D005290:Ferric Compounds / Q000737:chemistry*; D007502:Iron Chelating Agents / Q000737:chemistry*; D008958:Models, Molecular; D010636:Phenols / Q000737:chemistry*; D013844:Thiazoles / Q000737:chemistry*; D014961:X-Ray Diffraction
D005290:Ferric Compounds; D007502:Iron Chelating Agents; D010636:Phenols; D013844:Thiazoles; C025316:pyochelin