Lanthanide complexes dithiophosphinates

Pinkerton and coworkers reported another method for separating the contact shifts and evaluating the hyperfine coupling constant A for P in NMR studies of a series of tetrakis lanthanide complexes derived from dithiophosphinates, [R S2P(CH3)2 4] (Spiliadis and Pinkerton 1982) and esters of dithiophosphoric acid, [R (XO)2PS2 4] ... 

Boehme, C., Wipff, G. 2001. The energetic and structural effects of steric crowding in phosphate and dithiophosphinate complexes of M3+ lanthanide cations. A computational study. Chem. Eur. J. 1 1398-1407. 

Cyanex 301 One of the solvent extraction processes, used together with UREX, for separating the components of used nuclear fuel. This process uses a complex phosphinic acid, [bis(2,4,4-trimethylpentyl)dithiophosphinic acid], made by Cytec Industries, Canada. Its purpose is to separate americium, curium, and lanthanide fission products from the other components. 

XAFS data for complexes of Cm with the HC301 extractant indicate only sulfur donation to the metal in the inner sphere of coordination. HC301 forms 3 1 complexes with the trivalent actinides and are coordinated in a bidentate mode as seen in Figure 91. Data indicates a hexacoordinate structure that resembles Z>3 symmetry in lanthanide dithiophosphinic acid complexes. 

Yttrium, Lanthanum and the Lanthanides. P NMR spectroscopy has been used to study complexation of La " by (4-02NC6H40)2P02H and (MeO)(4-02NC6H40)P02H. C and N NMR spectroscopy has been used to study complex formation between [SCN] andPr + and Nd. P chemical shifts of di(chlorophenyl)dithiophosphinic acid correlate quantitatively with the extrac-tability of Am and Eu ". ... 

---