Abstract
Syntheses for new ligands based upon dibenzothiophene and dibenzothiophene sulfone platforms, decorated with phosphine oxide and methylphosphine oxide donor groups, are described. Coordination chemistry of 4,6- bis(diphenylphosphinoylmethyl)dibenzothiophene (8), 4,6- bis(diphenylphosphinoylmethyl)dibenzothiophene-5,5-dioxide (9) and 4,6-bis(diphenylphosphinoyl)dibenzothiophene-5,5-dioxide (10) with lanthanide nitrates, Ln(NO3)3·(H2O)n is outlined, and crystal structure determinations reveal a range of chelation interactions on Ln(III) ions. The nitric acid dependence of the solvent extraction performance of 9 and 10 in 1,2-dichloroethane for Eu(III) and Am(III) is described and compared against the extraction behavior of related dibenzofuran ligands (2, 3; R = Ph) and n-octyl(phenyl)-N,N- diisobutylcarbamoylmethyl phosphine oxide (4) measured under identical conditions.
Original language | English |
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Pages (from-to) | 5698-5711 |
Number of pages | 14 |
Journal | Inorganic Chemistry |
Volume | 53 |
Issue number | 11 |
DOIs | |
State | Published - Jun 2 2014 |