South African Journal of Chemistry
versão On-line ISSN 1996-840X
versão impressa ISSN 0379-4350
SABOUNCHEI, S. Javad; JODAIAN, Vida e NEMATTALAB, Hassan. Synthesis and characterization of transition metal (Hg(II), Ag(I) and Cd(II)) complexes of some new phosphorus ylides. S.Afr.j.chem. (Online) [online]. 2009, vol.62, pp.9-13. ISSN 1996-840X.
Reaction of two new phosphorus ylides Ph3PCHCOC10H7 (Y1) and Ph3PCHCOC4H3S(Y2) with mercury(II) halides and a previously reported ylide (p-tolyl)3PCHCOOCH2Ph (Y3) with CdCl2 in equimolar ratios using methanol as solvent yielded binuclear complexes of the type [(Y).HgX2]2 (Y = Y1 and Y2, X = Cl, Br and I) and a complex of [(Y3).HgCl2]2. The latter ylide reacts with Hg(NO3)2.H2O in the same solvent with equimolar ratios to give a polynuclear complex [Hg(Y3)(NO3)(µ,-NO3)]n. Also, the reaction between ylides and AgNO3 in 1:2 molar ratios gave mononuclear complexes. Characterization of these products was carried out by elemental analysis, IR and multinuclear NMR techniques.
Palavras-chave : Phosphorus ylides; triphenylphosphine; mercury(II) nitrate; silver nitrate.