Molybdenum wheels

Octanuclear molybdenum wheels incorporating a Mo(VI) (94) or a W(VI) (93) octahedron can also be prepared from a basic solution of the oxothio precursor containing a stoichiometric amount of molybdate or... 

In the case of giant wheel (molybdenum blue) compounds, the general synthetic strategy involves the acidification (pH 1) and reduction of an aqueous molybdate(VI) solution [possible reducing agents iron powder, tin(II) chloride, molybdenum(V) chloride, ascorbic acid, cysteine, hydroxylamine, hypophos-phorous acid, sodium dithionite, or hydrazine sulfate].On the other hand, an icosahedral ball-shaped cluster can be formed in an aqueous Mo(VI)... 

Cobalt is used in the manufacture of alloys with a high melting point, strength, and resistance to oxidation, in nuclear technology, and in the manufacture of hard metal alloys, e.g., for grinding wheels. Alloys with chromium, nickel, molybdenum, and copper are used in the electrical, aeronautical, and car industries. 

A C -symmetric tetrakis-bidentate ligand syntone 322, a derivative of the molybdenum(Il) paddle wheel complex, has been self-assembled in [87] with iron(II) cations by Scheme 4.89 to give a polycationic FegMoia cubic capsule 619. Its coordi-natively unsaturated molybdenum centers are located on each face of the cage framework and are able to coordinate donor species. Eight C3-symmetric tris-pyridylimine iron(II) vertex metal-locenters have/ac-coordination polyhedra with the same A or A stereochemistry both enantiomers are presented in its X-rayed crystal. The faces of this capsule, encapsulating three disordered acetonitrile... 

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