Dithiophosphinic acid metal complexes

Cavell, R. G., Sanger, A. R. Metal complexes with substituted dithiophosphinic acids. 

Bis(dialkyldithiophosphinato)nickel(II) complexes were prepared by the direct synthesis of an alkali metal or ammonium salt of the dithiophosphinic acid and a nickel salt in aqueous solution.2039,2061"2063 Ni(S2AsR2)2 and Ni(Se2PR2)2 complexes were prepared in a similar way.2064"2066 All of these complexes are square planar like their dithiophosphate analogues. X-Ray crystal structures of the complexes Ni(S2PR2)2, with R = Me,2067 Et, Ph,1983 R2 = Me/ Et 2°w r2 = Me/2-thienyl,2069 and Ni(Se2PPh2)21984 have been reported (Table 90). 

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. 

The maximum binding capacity was found to be close to 350 mg Pd/g (Cyanex 301). Pd and Cyanex 301 were shown to form 1 1 complex, but more than one molecule of the carrier could surround the metal ion [135]. Palladium uptake was not significantly affected by the presence of competing metals namely Cu, Ni, Zn, or Pt. The association of Pd with di(2,4,4-trimethylpentyl) dithiophosphinic acid proved partially irreversible since... 

Sodium 0,0-diisobutyl dithiophosphate. See Sodium diisobutyl dithiophosphate Sodium di (isobutyl) dithiophosphinate Empihcal CsHi8NaPS2 Formula (CH3CHCH3CH2)2PS2Na Uses Flotation agent for metallic sulfides improves the recovery of silver from complex base metal ores and in removing cadmium from wet process phosphoric acid Trade Name Synonyms Aerophine 3418A [Cytec Ind.. http //www.cytec.com]... 

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