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Syntheses and Structures of Magnesium Pyridine Thiolates—Model Compounds for Magnesium Binding in Photosystem I
Author(s) -
Sousa Pedrares Antonio,
Teng Weijie,
RuhlandtSenge Karin
Publication year - 2003
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.200204294
Subject(s) - chemistry , magnesium , pyridine , sulfur , inorganic chemistry , ligand (biochemistry) , photosystem ii , photochemistry , medicinal chemistry , photosynthesis , organic chemistry , biochemistry , receptor
Abstract Novel magnesium pyridine‐2‐thiolates were prepared by using alkane elimination chemistry. The resulting complexes display a metal coordination environment composed of sulfur/nitrogen bonding from the intramolecularly stabilized mercaptopyridine ligand, in addition to coordination by the oxygen centers from two THF donors. The compounds are well‐suited model compounds for the magnesium centers in Photosystem I, in which magnesium, situated in the central chlorophyll ligand, is bound to sulfur from a nearby methionine residue. All compounds were characterized by 1 H, 13 C NMR, and IR spectroscopy, in addition to Xray crystallography.