Sulfur ligands reactions

In this case, the diminution in Lewis acidity caused by the introduction of the two, less-electronegative, sulfur ligands prevents any reaction with the dithiol enzyme, regardless of the nature of the alkyl group. 

Scheme 7.7 Heck reaction of dihydrofuran with phenyltriflate with cyclopropane-based phosphorus/sulfur ligands.

This book clearly demonstrates that transition-metal complexes of chiral sulfur ligands are nowadays powerful catalysts in a considerable number of reactions, although, they have been generally less investigated than complexes with other donor atoms, since the interest in this chemistry is much more recent. In this book, the author has attempted to systematise the role that chiral... 

Reaction with sulfur ligands leads to rupture of the metal framework, and the structure of one of the compounds isolated is shown in Fig. 51. The reaction of the parent carbonyl with the ion [HOs3(CO)a] ... 

Biirgi studied also a series of five coordinated cadmium complexes, 38, that contain three equatorial sulfur ligands, but in which the fourth and fifth, axial ligands, X and Y, are sometimes iodine, sometimes sulfur, and sometimes oxygen (84). The structural correlations have a clear interpretation in terms of the ligand exchange reaction and are reminiscent of the kind of process that is believed to occur in S 2-type nucleophilic substitution reactions ... 

A transformation reaction occurs when Cp2Ti(S5) (33) is refluxed for one day. The formation of a second structural isomer (34) provides an interesting example for the migration of a x-complexed organic unit to an inorganic sulfur ligand (57). 

Reaction of (34) with the bidentate sulfur ligand isotrithionedithiol (H2dmit, (278)) produced a dianionic complex. The reaction of (278) in which the thiol groups were deprotected in situ prior to the substitution reaction with [TcNClJ in acetonitrile gave a 45% yield of [TcN(dmit)2] ... 

---