Pb. Ruikar et al., SOME TERNARY SULFOXIDE AND AMIDE ADDUCTS OF PLUTONYL-PYRAZOLONATES, Journal of radioanalytical and nuclear chemistry, 170(1), 1993, pp. 43-50
Solid complexes of plutonyl ion with benzoyl (PMBP), acetyl (PMAP) and
trifluoroacetyl (PMTFP) derivatives of 1-phenyl-3-methylpyrazol-S-one
and various oxo donors such as dihexyl sulfoxide (DHSO), dioctyl sulf
oxide (DOSO), dibutyl hexanamide (DBHA), dibutyl octanamide (DBOA) and
dibutyl decanamide (DBDA) have been synthesized and characterized. An
alytical data establish that sulfoxides form 1:1 adducts and have the
stoichiometry PuO2 . X2 . Y (X = PMBP. PMAP and PMTFP) and Y = DHSO an
d DOSO while amides form 1:2 adducts of the type PuO2X2 . 2A where A =
DBHA, DBOA and DBDA. The I. R. spectra of sulfoxide and amide complex
es indicate that the ligands are O-bonded. Spectrophotometric investig
ations of the benzene solution of these complexes indicate a bathochro
mic shift of the 831 nm peak to 848-853 nm region, which confirms the
retention of PuO22+ moiety in these synergistic adducts.