X-ray and spectroscopy studies of mercury (II) and silver (I) complexes of α-ketostabilized phosphorus ylides

Karami K., Büyükgüngör O., Dalvand H.

Journal of the Korean Chemical Society, vol.55, no.1, pp.38-45, 2011 (Scopus) identifier

  • Publication Type: Article / Article
  • Volume: 55 Issue: 1
  • Publication Date: 2011
  • Doi Number: 10.5012/jkcs.2011.55.1.038
  • Journal Name: Journal of the Korean Chemical Society
  • Journal Indexes: Scopus
  • Page Numbers: pp.38-45
  • Keywords: α-keto-stabilization, Mercury, Phosphorus ylides, Silver, Transition metals
  • Ondokuz Mayıs University Affiliated: No

Abstract

The complexation behavior of the a-ketostabilized phosphorus ylides Ph 3P=CHC(O) C6H4-X (X=Br, Ph) towards the transition metal ions mercury (II) and Silver (I) was investigated. The mercury(II) complex {HgX2 [Y]} 2 (Y1=4-bromo benzoyl methylene triphenyl phosphorane; X=Cl(1), Br(2), I(3), Y2=4-phenyl benzoyl methylene triphenyl phosphorane; X=Cl(4), Br(5), I(6)) have been prepared from the reaction of Y1 and Y2 with HgX 2 (X=Cl, Br, I) respectively. Silver complexes [Ag(Y2) 2] X(X=BF4(7), OTf(8)) of the a-keto-stabilized phosphorus ylides (Y2) were obtained by reacting this ylide with AgX (X=BF 4, OTf) in Me2CO. The crystal structure of complexes (1) and (4) was discussed. These reactions led to binuclear complexes C-coordination of ylide and trans-like structure of complexes [Y1HgCl 2]2. CHCl3 (1) and [Y2HgCl 2]2 (4) is demonstrated by single crystal X-ray analyses. Not only all of complexes have been studied by IR, 1H and 31P NMR spectroscopy, but also complexes 1-3 have been characterized by 13CNMR.