Molybdenum complexes sulfido

The molybdenum complex of the molybdopterin prosthetic group (ligand). In the molybdenum cofactor the minimal coordination of the Mo atom is thought to be provided by the chelating dithiolenato group of the molybdopterin and either two oxo or one oxo and one sulfido ligands. 

Protonation of coordinated dinitrogen with dihydrogen mediated by sulfido-bridged dinuclear molybdenum complexes... 

DIHYDROGEN MEDIATED BY SULFIDO-BRIDGED DINUCLEAR MOLYBDENUM COMPLEXES... 

C. ]. Doonan, Novel cis-Oxo-sulfido-molybdenum Complexes Which Model Molybdenum Hydroxylases, PhD Dissertation, University of Melbourne, 2004. 

Chemical systems of relevance to the molybdenum and tungsten enzymes include synthetic pterins, a-phosphorylated ketones (as precursor models), and a variety of molybdenum and tungsten oxido, sulfido, and 1,2-enedithiolate complexes. These compounds have been used to (1) confirm the identity of MPT derivatives (2) define steps in MPT biosynthesis (3) calibrate spectroscopic observations (4) give precise geometries and reactivities that can be used as input for theoretical studies and (5) provide options for mechanistic consideration. 

Water-soluble dimeric molybdenum(V) complexes containing /i-oxo /i-sulfido cores (M02O3S) were first prepared by Schultz and coworkers. Studies on the complexes with M02O3S cores in organic solvents have also been made. We use here the easily obtainable sodium molybdate and hydrazine hydrochloride instead of molybdenum pentachloride, and sodium sulfide instead of H2S gas. ... 

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