Radical cations and radicals of thiourea and its derivatives in n-butyl chloride solutions: A pulse radiolysis study

Introduction Organic/non-aqueous solvents are normally used in several studies to generate free ions of associated solutes, wherein the radiolytically generated solvent reactive species (free ions and radicals) are actively involved in electron transfer (ET) reactions1–6. The generated free ions of solvent on ET reaction produce radical cations and radicals of available solutes. For example the reactive transient species produced during radiolysis of neat n-butyl chloride (BuCl), an organic solvent are: the parent radical cations (BuCl•+), butene radical cations (Bu•+) and butyl radicals (Bu•)2, in which the parent radical cations undergo following reactions to produce radical cations and radicals of solute molecules (thiourea/ urea/selenourea molecules in this case): BuCl BuCl•+, Bu•+, Bu•, Cl– (1) SH + BuCl•+  SH•+ + BuCl (SH represents all urea type molecules) (2) J. Indian Chem. Soc., Vol. 97, No. 11a, November 2020, pp. 2233-2241