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    STUDIA CHEMIA - Issue no. 1 / 2006  
         
  Article:   BISMUTH(III) COMPLEXES WITH DIORGANODICHALCOGENO-PHOSPHINATO LIGANDS. SYNTHESIS AND SPECTROSCOPIC CHARACTERIZATION.

Authors:  M. JOENSSON, A. SILVESTRU, C. SILVESTRU.
 
       
         
  Abstract:  Metathesis reactions between BiCl3 or OBiCl with alkali metal salts of diorganodichalcogenophosphinato ligands, in stoechiometric ratio, led to tris(diorganophosphinato)bismuth, Bi(O2PR2)3 (R = Me, Ph, Cy, Prn, Bz), tris(diorganomonothiophosphinato)bismuth, Bi(OSPPh2)3, as well as the diphenyldithiophosphinato derivatives Bi(S2PPh2)3 and OBi(S2PPh2). The compounds were characterized by multinuclear NMR (1H, 13C, 31P), IR and mass spectrometry. The spectroscopic data allowed us to predict a polymeric structure with anisobidentate ligands in case of the dioxo derivatives, while for the other species either monomeric or polymeric structures may be proposed.  
         
     
         
         
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