A series of reactions between substituted mercaptopyridines and Fe<sub>3</sub>(CO)<sub>12 </sub> has been performed and the products isolated and characterized. The mercaptopyridines contain substituents with electron-donating and electron-withdrawing properties. The position and electronic properties of the substituents determined the nature (structural and electronic) of the iron carbonyl complexes formed. The resultant mono and diiron carbonyl complexes will be described. These iron carbonyl complexes containing mercaptopyridines are of interest as models of hydrogenase enzymes. They have been structurally (X-ray crystallography) and spectroscopically (IR, UV-visible and NMR) characterized, and examined as catalysts for the electrochemical reduction of proton to hydrogen.

Iron carbonyl complexes with mercaptopyridines

255th National Meeting (2018)

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