Platinum complexes thiocarbonyl

The latter carbonylation involves the formation of PtH(SR)(PPh3)2 by the oxidative addition of RSH to the zero-valent platinum complex. A possible pathway may include the CO insertion into the S-Pt bond of PtH(SR)(PPh3)2. Then, acylplatination of alkynes generates p-thiocarbonyl-substituted vinylplatinum intermediate, which undergoes reductive elimination to give the a,p-unsaturated thioesters with regeneration of the catalyst. 

SC, Thiocarbonyls, osmium, 26 185-187 SC4Hb, Thiophene, tetrahydro-gold complexes, 26 85-87 SCjHj, 2,4-Pentadienthial osmium complex, 26 188 SC H6, Benzenethiol osmium complex, 26 304 SClF,0,PtCiiHio, Platinum(II), chloro-bis-(triethylphosphine)(trifluoromethane-sulfonato)-cis-, 26 126... 

The complex (197) with a dithiocarboxylate ligand coordinated to platinum(II) bonded through both monodentate carbon and die chelating dithiocarboxylate ligand has been prepared from either the thiocarbonyl platinum(II) precursor or the carbon disulfide adduct of platinum(O).1796,1797 A cyclopentadienyl-substituted dithiocarboxylate ligand (198) can be used to prepared S,S-bonded platinum(II) and (IV) complexes Pt(C5H4CS2)2 and PtfCsKtCS 2-. The complexes show v(PtS) at 340 cm-1, and in each case electronic absorption bands of the Pt— L type are at 19 500 cm-1 and 29 500 cm-1.1798... 

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