Pyridinethiones complexes

Another related example can be found in the series of copper complexes with the bis(imino)-3-formyl-l-phenyl-pyridinethione ligands shown in Scheme 18.180 Both Cu(I) and Cu(II) complexes can be prepared with this type of ligands. 

Not all vanadium chelates have antidiabetic properties in animals. For instance, four mixed 0,S binding bidentate ligand precursors were derived from maltol to yield four new complexes, two pyranthiones and two pyridinethiones. These complexes are hydrolytically stable and had no observable insulin-enhancing properties [147], The ultimate effectiveness of a vanadium-complex as an antidiabetic drug... 

A good route to the pyridinethione system is the reaction of Ir(H)5(PCy3)2 with mercaptopyridine that is protonated with HBF4 (HSpyH BF4-) (Scheme 2) [68, 74]. First the octahedral complex [Ir(H—HpyS-T i)2(PCy3)2]BF4 is obtained. Here two hydrides serve as hydrogen bond acceptors from protons donated by cis pyridinethione ligands in the crystalline state or in CDjClj solution. The H—H distance is calculated on the basis of T, data to be 1.75 0.05 A. 

Some unique structural types involving hydridic-protonic bonds were observed in triphenylphosphine complexes of iridium(III) [84, 88]. The reaction of IrH3(PPh3)3 with HBF4 in the presence of pyridinethione affords a dihydrido complex with a single hydridic-protonic contact, [IrH(H -HpyS-ii )(PPh3)3](BF4) (Scheme 3). 

Hydroxy-2-pyridinethione), sodium salt. See Sodium pyrithione 8-Hydroxyquinoline copper complex. See Copper 8-qulnolinolate Hydroxyquinone. See Hydroquinone 1-Hydroi -s-butylamine. See 2-Aminobutanol... 

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