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2000 (1)
1998 (1)
1Author    Prof Sonderdruckanforderungen, M. Dr, HerberholdRequires cookie*
 Title    Monosubstituierte Derivate des Halbsandwich-Komplexes Cp*Ta(CO)4 - Vergleich mit den analogen Vanadiumverbindungen Cp*V(CO)3L und Röntgenstrukturanalyse des y-Picolin-Komplexes Cp*V(CO)3(NC5H4-Me(4))  
 Abstract    M onosubstituted D erivatives o f the H alfsandw ich C om plex C p*T a(C O)4 -C om parison with the A nalogous V anadium C om pounds C p*V (C O)3L and X -R ay Structural Analysis of the y-Picoline C om plex C p*V (C O)3(N C 5H 4-M e(4)) M ax H erberhold*, G udrun F rohm ader, Jürgen P eu k ert und W olfgang Milius The photo-induced substitution of a CO ligand in Cp*Ta(CO)4 (1) has been used to pre­ pare a series of Cp*Ta(CO)3L (2) complexes, in which the two-electron ligand L includes, e.g., isonitriles, sulfanes, cyclic ethers, phosphanes and pyridines. The complexes (2 a -y) were characterized by their v(CO) frequencies and their 'H and 13C NM R spectra, and were compared -if possible -with the corresponding vanadium complex, C p*V(C O)4 (3) and its derivatives, C p*V(C O)3L (4). The molecular structure o f the 4-picoline complex Cp*V(C O)3(NC5H 4-M e(4)) (4r) has been determ ined by X-ray crystal structure analysis. 
  Reference    Z. Naturforsch. 55b, 1188—1194 (2000); eingegangen am 21. August 2000 
  Published    2000 
  Keywords    Halfsandwich Complexes, Carbonylmetal Compounds, Photoreactions 
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 TEI-XML for    default:Reihe_B/55/ZNB-2000-55b-1188.pdf 
 Identifier    ZNB-2000-55b-1188 
 Volume    55 
2Author    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