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1998 (1)
1Author    Gerhard Henig, Helmut WernerRequires cookie*
 Title    Mesitylene Osmium(II) Complexes Containing the Functional Phosphane ^BuP(CH2C 0 2Me)2 and Anionic Species Derived Thereof as Bi-and Tridentate Ligands  
 Abstract    The dichloroosmium(II) compound [(mes)OsCl2(L)] (2) with L = fBuP(CH2C0 2 Me)2 reacts with one or two equivalents of AgPFö to give the mono-or dicationic complexes 3 and 4 containing the phosphanediyldiester as a bi-or tridentate chelating ligand. Complex 4 undergoes, in the presence of water, partial hydrolysis to give the difluorophosphatoosmium(II) derivative 5 in quantitative yield. Treatment of 4 with two equivalents of KOfBu affords by deprotonation at both CH2 groups of L the neutral complex 6, in which one PCHC0 2 Me unit of the dianionic ligand |7BuP(CHC0 2 Me)2]2-forms a five-membered and the other PCHC0 2 Me unit a three-membered ring with the metal. The reaction of 6 with water leads selectively to the formation of the chelate complex 7 containing the phosphanediylbis(carboxylate) [/BuP(CH2C0 2)2]2~ as a tripodal ligand. 
  Reference    Z. Naturforsch. 53b, 540—544 (1998); received February 26 1998 
  Published    1998 
  Keywords    Osmium, Halfsandwich Complexes, Chelate Complexes, Phosphanediyldiester 
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 TEI-XML for    default:Reihe_B/53/ZNB-1998-53b-0540.pdf 
 Identifier    ZNB-1998-53b-0540 
 Volume    53