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  • Ruthenium complexes  (3)
  • Rhodium  (2)
  • Iridium complexes
  • 1995-1999  (5)
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Year
  • 1
    Electronic Resource
    Electronic Resource
    Catalytic Formation of Oligopeptides from α-Amino Acid Esters with (p-Cymene)ruthenium(II) Complexes (1998)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 1998 (1998), S. 729-731 
    Details
    ISSN: 1434-1948
    Keywords: Catalysis ; Oligomerization ; Organometallics ; Oligopeptides ; Ruthenium complexes ; Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Consecutive addition of one-equivalent portions of glycine ethyl ester to [(p-cymene)Ru(GGGOMe-H+)Cl] leads to considerable amounts of (tetra- to nonapeptide)ruthenium complexes in a one-pot reaction, in which the (p-cymene)RuCl fragment acts as a catalyst. The analogous reaction with alanine methyl ester affords AGGG and AAGGG complexes as the main products. The course of these metal-catalyzed peptide oligomerizations has been followed by mass spectrometry. The synthesis and characterization of the pentapeptide complex [(C6Me6)Ru(GGGGGOMe-H+)] is reported.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Metallkomplexe mit biologisch wichtigen Lisganden, LXXXLXXIX. Mitteilung: Lit.. (η3:η3-C10H16)Ru(IV)-Komplexe mit α-Aminocarboxylaten, α-Aminosäureestern und Peptidestern als Liganden (1995)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 128 (1995), S. 1117-1125 
    Details
    ISSN: 0009-2940
    Keywords: 1,7-Dimethylocta-2,6-diene-1,8-diyl ; Ruthenium complexes ; α-Amino carboxylates ; α-Amino acid esters ; Peptide esters ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Metal Complexes Containing Biologically Important Ligands, LXXXLXXIX. Mitteilung: Lit. .  -  (η3:η3-C10H16)Ru(IV) Complexes with α-Amino Carboxylates, α-Amino Acid Esters, and Peptide Esters as LigandsReactions of the chloro-bridged bis(allyl) complex [(η3:η3-C10H16)Ru(Cl)(μ-Cl)]2 with α-amino carboxylates and α-amino acid esters afford the complexes (η3:η3-C10H16)(Cl)RuNH2CHRCO2 (2) and (η3:η3-C10H16)(Cl)2-RuNH2CHRCO2R′ (3). Abstraction of chloride from 3 by Ag+ gives the N,O-chelates [(η3:η3-C10H16)(Cl)RuNH2CHRCO2R′]+BF4 (4). Cysteine methyl ester forms the N,S-chelate complex (η3:η3-C10H16)(Cl)RuNH2CH(CO2CH3)CH2S (5), and with histidine methyl ester a dinuclear complex 6 with N,N-histidine bridge is obtained. Compound 3d with L-PheOEt as ligand was characterized by X-ray diffraction.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19951281110
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  • 3
    Electronic Resource
    Electronic Resource
    Metal Complexes of Biologically Important Ligands, XCIV. Hexanuclear Isocyanide and Carbene Metal Complexes from Neomycin BDedicated to Professor Armin Weiß on the occasion of his 70th birthday. (1997)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 130 (1997), S. 1659-1662 
    Details
    ISSN: 0009-2940
    Keywords: Hexadeamino-hexaisocyano-neomycin B ; Organometallic complexes ; Gold ; Chromium ; Rhodium ; Iridium ; Ruthenium ; Palladium ; Platinum ; Hexanuclear carbene gold(I) complexes ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: From the amino glycoside neomycin B, the acetate-protected hexaisocyanide 4 has been prepared. 4 forms the hexanuclear complexes [(4)(AuCl)6] (5), {(4)[Cr(CO)5]6}, {(4)[MCl2(η5-C5Me5)]6} (M = Rh, Ir), {(4)[RuCl2(p-cymene)]6}, {(4)-[MCl2(PR3)]6} (M=Pd, Pt), and 4{(4)[PdCl(C6H4CH2NMe2)]6). The hexaisocyanohexagold(I) complex 5 reacts with H2NtBu and PhNH2 to give the corresponding carbene complexes. The compounds have been characterized by IR, 13C- and 31P-NMR spectroscopy, and (partially) by FAB-MS data.
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19971301117
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  • 4
    Electronic Resource
    Electronic Resource
    Metal Complexes of Biologically Important Ligands, LXXXVI. Organometallic Complexes of Ruthenium(II), Rhodium(III), Iridium(III), and Gold(I) with Cinchona AlkaloidsDedicated to Dr. Janina Altman on the occasion of her 65th birthday. (1996)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 129 (1996), S. 331-335 
    Details
    ISSN: 0009-2940
    Keywords: Quinine ; Cinchonidine ; Quinidine ; Chinchonine ; Ruthenium complexes ; Gold complexes ; Rhodium complexes ; Iridium complexes ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The following chiral organometallic complexes of the cinchona alkaloids quinine (L1), cinchonidine (L2), quinidine (L3), cinchonine (L4) were prepared: [(η5-C5H5)(Ph3P)(OC)-Ru(L)]BF4 (1: L=L1; 2: L=L2; 3: L=L3), ClAuL1 (4), [(η5-C5Me5)(Cl2)Ir(L)] (5: L=L1; 6: L=L2; 7: L=L4), [(η5-C5Me5)(Cl2)Rh(L2)] (8), [(η6-p-cymene)(Cl2)Ru(L)] (9: L=L1; 10: L=L2; 11: L=L4). In all complexes the tertiary nitrogen atom of the cinchona alkaloids is bound to the metal. Complexes 5 - 11 are formed as mixtures of isomers. Elimination of HCl from 10 and 11 gives the neutral N,O-chelate complexes (η6-p-cymene)(Cl)Ru(L2 - H+) (13) and (η6-p-cymene)-(Cl)Ru(L4 - H+) (14) which were structurally characterized by X-ray diffraction.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19961290314
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  • 5
    Electronic Resource
    Electronic Resource
    Metallkomplexe mit biologisch wichtigen Liganden. XCV. η5- Pentamethylcyclopentadienyl-Rhodium-, -Iridium-, (η6-Benzol)-Ruthenium- und Phosphan-Palladium-Komplexe von Prolinmethylester und ProlinamidProfessor Anton Meller zum 65. Geburtstag gewidmet (1997)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 623 (1997), S. 1903-1911 
    Details
    ISSN: 0044-2313
    Keywords: Rhodium ; ruthenium ; iridium ; palladium ; proline ; amide complexes ; proline methylester complexes ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Metal Complexes of Biologically Important Ligands. XCV. η5-Pentamethylcyclopentadienyl Rhodium, Iridium, η6- Benzene Ruthenium, and Phosphine Palladium Complexes of Proline Methylester and Proline AmideProline methylester (L1) and proline amide (L2) give with the chloro bridged complexes [(η5 -C5Me5)MCl2]2 (M = Rh, Ir), [(η6 -benzene)RuCl2]2 and [Et3PPdCl2]2 N and N,O coordinated compounds: (η5 -C5Me5)M(Cl2)L1 (1, 2 M = Rh, Ir), [(η5-C5Me5) Rh(Cl)(L2)]+Cl- (5), [(η6- C6Me6) Ru(Cl)(L2)]+Cl- (6), [(η6-p-cymene)Ru(Cl)(L2)]+Cl- (7), [(eta;5-C5Me5)M(Cl)(L2-H+)] (9, 10 M = Rh, Ir), (Et3P)Pd(Cl)2L1 (3), and [(Et3P)Pd(Cl)(L2)]+Cl- (8). The NMR spectra indicate that for 5 and 6 only one diastereoisomer is formed. The complexes 1, 2, 3 and 5 were characterized by X-ray diffraction.
    Notes: Prolinmethylester (L1) und Prolinamid (L2) bilden mit den chlorverbrückten Komplexen [(η5-C5Me5)MCl2]2 (M = Rh, Ir), [(η6-p-Cymol)RuCl2]2 und [Et3PPdCl2]2 Verbindungen mit N- und N,O-Koordination: (η5-C5Me5)M(Cl2)L1 (1, 2 M = Rh, Ir), [(η5-C5Me5) Rh(Cl) (L2)]+Cl- (5), [(η6- C6Me6)Ru(Cl) (L2)]+Cl- (6), [(η6-p- Cymol)Ru(Cl)(L2)]+Cl- (7), [(η5- C5Me5)M(Cl)(L2-H+)] (9, 10 M = Rh, Ir), (Et3P)Pd(Cl)2L1 (3) und [(Et3P)Pd(Cl)(L2)]+Cl- (8). Die NMR Spektren weisen darauf hin, daß von 5 und 6 jeweils nur ein Diastereoisomeres entsteht. Die Komplexe 1, 2, 3 und 5 wurden durch Röntgenstrukturanalyse charakterisiert.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19976231214
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