Synthesis and lanthanide coordination chemistry of CMPO-decorated dibenzothiophene and dibenzothiophene sulfone platforms

New hybrid donor ligands based on the dibenzothiophene and dibenzothiophene-5,5-dioxide platforms decorated with C-attached carbamoylmethylphosphine oxide substituents have been prepared. The potential chelation behavior of the ligands has been explored with molecular mechanics calculations and selected coordination chemistry with Ln(NO3)3 salts examined. The acid dependence of the solvent extraction performance of the dibenzothiophene-5,5-dioxide derivative for Am(III) and Eu(III) has also been surveyed.99