A COMPARATIVE ESR STUDY OF THE REACTIONS OF GROUP IVB ORGANOMETALLIC RADICALS WITH 4,4'-DIMETHOXYBENZOPHENONE, 4,4'-DIMETHOXYTHIOBENZOPHENONE, AND 3-ETHYL-2-THIOXO-4-OXAZOLIDIONE

Article abstract of DOI:10.1016/S0022-328X(00)86718-2

Various reactions of Group IVB organometallic radicals with 4,4'-dimethoxybenzophenone, 4,4'-dimethoxythiobenzophenone, and 3-ethyl-2-thioxo-4-oxazolidione were studied by ESR spectroscopy.The greater involvement of sulfur in comparison with oxygen in spin delocalization is clearly reflected in both the hyperfine coupling constants and the g-factors.In general, thiocarbonyl compounds appear to be more efficient in forming radical adducts than the corresponding carbonyl compounds but the overall reactions depend strongly upon the structure of the thiocarbonyl compounds.