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Preparation and Reactivity of a Triphosphenium Bromide Salt: A Convenient and Stable Source of Phosphorus(I)
Published on: November 22, 2016
Syntheses and structures of magnesium pyridine thiolates--model compounds for magnesium binding in photosystem I
Antonio Sousa Pedrares1, Weijie Teng, Karin Ruhlandt-Senge
1Departamento de Quimica Inorgánica, Universidad de Santiago de Compostela, 15705 Santiago de Compostela, Spain.
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.
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