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1996 (1)
1985 (1)
1Author    Ralph Bergs, Roland Krämer, Michael Maurus, Bernhard Schreiner, Reinhold Urban, ChristopherM. Issling, Kurt Polbom, Karlheinz Siinkel, Wolfgang BeckRequires cookie*
 Title    Metallkomplexe mit biologisch wichtigen Liganden, LXXXIV [1] Halbsandwich-Komplexe von Rhodium(III), Iridium(III), Cobalt(III), Ruthenium(II), Ruthenium(III) und Chrom(III) mit Aminosäureester-Liganden Metal Complexes with Biologically Important Ligands, LXXXIV [1] Half-Sandwich Complexes o f Rhodium(III), Iridium(III), Cobalt(III), Ruthenium(II), Ruthenium(III) and Chromium(III) with Amino Acid Ester Ligands  
 Abstract    A series of cyclopentadienyl and pentamethylcyclopentadienyl complexes of cobalt, rhodium, iridium, ruthenium and chromium with a-amino-acid esters (L) as ligands was prepared and characterized: Cp*(Cl)2M(L) (1, 2: M = Rh, Ir), Cp(I)2Co(L) (4), [Cp(Ph3P)2Ru(L)]+BF~ (6), [Cp(OC)(Ph3P)Ru]+BF^ (7) and the paramagnetic compounds Cp*(Cl)2Ru(L) (8) and Cp(Br)2Cr(L) (9). AlaOMe and HisOMe form N ,0 and N,N chelate complexes [Cp*(Cl)M(alaOMe)]+BF~ (3: M = Rh, Ir), [Cp(I)Co(hisOMe)]+BF4. Cp*Co(CO)I2 and GlyOMe gave the N,0-dipeptide ester complex Cp*(I)Co(glyglyOMe)]+BF^ (5). The crystal structures of Cp(I)2Co(glyOEt) and Cp*(Cl)2Ru(alaOMe) were determined by X-ray diffrac­ tion. The complexes 1 and 2 undergo ester exchange reactions with CD3OD. [Cp*MCl2]2 (M = Rh, Ir) catalyze the exchange of the ethoxy group in Me2NCH2C 0 2Et by CD3OD. 
  Reference    Z. Naturforsch. 51b, 187—200 (1996); eingegangen am 21. Juli 1995 
  Published    1996 
  Keywords    Transition Metal Complexes, Cyclopentadienyl, a-Amino Acid Ester 
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 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-0187.pdf 
 Identifier    ZNB-1996-51b-0187 
 Volume    51 
2Author    Herbert Bissinger, Wolfgang BeckRequires cookie*
 Title    Metallkomplexe mit biologisch wichtigen Liganden, XXXIX [1] Platin(IV)-Komplexe mit a-Aminosäure-und Peptidestern; 15 N-und 195 Pt-NMR-Spektren von «-Aminosäuren-Platin-Komplexen Metal Complexes with Biologically Important Ligands, XXXIX [1] Platinum(IV) Complexes with a-Amino Acid Esters and Peptide Esters; l3 N and 14r, Pt NMR Spectra of Platinum Complexes with a-Amino Acids  
 Abstract    The platinum(IV) complexes PtX 4 L 2 (X = Cl, Br; 2 X = oxalate; L = glyOEt, glyglyOEt, gly-cleuOEt; 2 L = metOEt) have been obtained by oxidative addition of halogenes to platinum(II) compounds PtX 2 L2-A high field shift of <3 15 N (—50 ppm) is observed for the coordi-nated amino acid ligand of various platinum complexes, compared to the free ligand. Platinum(II) and platinum(IV) can be distinguished by their 195 Pt NMR signals. 
  Reference    Z. Naturforsch. 40b, 507—511 (1985); eingegangen am 12. November 1984 
  Published    1985 
  Keywords    a-Amino Acid Esters, Peptide Esters, Platinum(IV) Complexes, "N NMR Spectra, 195 Pt NMR Spectra 
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 TEI-XML for    default:Reihe_B/40/ZNB-1985-40b-0507.pdf 
 Identifier    ZNB-1985-40b-0507 
 Volume    40