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  • Palladium complexes  (7)
  • Iridium complexes  (5)
  • 1
    Electronic Resource
    Electronic Resource
    Bis(dipeptide ester-H+) Complexes of Palladium(II) - Precursors for the Formation of Cyclotetrapeptides (1999)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 1999 (1999), S. 465-469 
    Details
    ISSN: 1434-1948
    Keywords: Dipeptide ester ; Cyclic tetrapeptides ; Palladium complexes ; Coordination chemistry ; Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: trans-Bis(dipeptide ester)palladium 1-6 complexes with a deprotonated amide group were obtained by dehydrochlorination of trans-Cl2Pd(dipeptide ester)2 or by direct reaction of Na2PdCl4 with dipeptide ester in the presence of sodium methoxide. The structure of Pd(NH2CH2CONCH2CH2CO2CH3)2 (3) was determined by X-ray diffraction. Addition of NaOCH3 to Pd[NH2C(H)(R)NCH2CH2CO2CH3]2 [R = CH(CH3)24, CH2Ph 5] results in the formation of the corresponding complexes 7, 8 with cyclic tetrapeptides which also can be directly synthesized from the dipeptide ester and Na2PdCl4.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Metallkomplexe von Farbstoffen  -  Übergangsmetall-Komplexe mit 2-(1,3-Dioxo-2-indanyliden)benzimidazolinen (1992)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 125 (1992), S. 61-66 
    Details
    ISSN: 0009-2940
    Keywords: Benzimidazoline, 2-(1,3-dioxo-2-indanylidene)-, as chelate ligand ; Copper complexes ; Nickel complexes ; Palladium complexes ; Platinum complexes ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Metal Complexes of Dyes  -  Transition Metal Complexes of Mono- and Dianions of 2-(1,3-Dioxo-2-indanylidene)-benzimidazolines2-(1,3-Dioxo-2-indanylidene)benzimidazolines (L) (1 - 6) react with metal salts and chloro-bridged complexes in the presence of NaH to give the mono and bis-N,O-chelate complexes (L  -  H+)2M (M=Cu, Pd, Ni) (7 - 9), (L  -  H+)M(PR3)Cl (M=Pd, Pt; 10 - 15 and (L  -  2H+)[Pt(PEt3)Cl]2 (16, 17). The electronic spectra of the bis(chelate) complexes show a large bathochromic shift of the absorptions in the visible region as compared to the free ligands. The structures of (L  -  H+)Pd(Cl)-(PnBu3) (10) and of (L  -  2H+)[Pt(Cl)PEt3)]2 (16) have been determined by X-ray crystallography. The two heterocyclic planes in 16 are bent along the elongated central C=C bond [143.2(12)pm] which gives a hip-roof-like structure.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19921250111
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  • 3
    Electronic Resource
    Electronic Resource
    Metallkomplexe von Farbstoffen, III. Übergangsmetall-Komplexe mit Pyrrolindigo (1992)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 125 (1992), S. 2347-2350 
    Details
    ISSN: 0009-2940
    Keywords: Indigo, octahydro- ; Pyrrole indigo, 4,4′-dibutyl-5,5′-dimethyl- ; Zinc complexes ; Copper complexes ; Rhodium complexes ; Iridium complexes ; Palladium complexes ; Platinum complexes ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Metal Complexes of Dyes, III[1,2]. - Transition Metal Complexes of Pyrrole Indigo The dianions of octahydroindigo and 4,4′-dibutyl-5,5′-dimethylpyrrole indigo (L) react with metal salts and chloro-bridged complexes [(μ-Cl)M(Cl)PR3]2 (M = Pd, Pt; R = nBu, Et), [(μ-Cl)M(Cl)(η5-C5Me5)]2 (M = Rh, Ir) to give the bis-N,O chelate complexes [M(L - 2H+)]n (M = Cu, Zn), (L - 2H+)[M(Cl)(PR3)]2 (M = Pd, Pt), and (L - 2H+)[M(Cl)(η5-C5Me5)]2 (M = Rh, Ir). The electronic spectra of the soluble complexes with phosphane or C5Me5 ligands show a large bathochromic shift of the absorptions in the visible region compared to the free neutral ligands which is in accordance with PPP calculations of model compounds.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19921251103
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  • 4
    Electronic Resource
    Electronic Resource
    Metallkomplexe mit biologisch wichtigen Liganden, LXVII[1]. Synthese von α-Aminosäuren aus Palladium(II)- und Rhodium(III)-koordinierten Iminen und Oximen von α-OxocarboxylatenHerrn Professor Dr. Wolfgang Steglich zum 60. Geburtstag gewidmet. (1993)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 126 (1993), S. 2421-2427 
    Details
    ISSN: 0009-2940
    Keywords: Palladium complexes ; Rhodium complexes ; α-Amino acids ; 2-Iminocarboxylate as ligand ; Chiral glycine ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Metal Complexes of Biologically Important Ligands, LXVII[1]. - Synthesis of α-Amino Acids from Palladium(II)- and Rhodium(III)-Coordinated Imines and Oximes of α-OxocarboxylatesThe bis-chelate complexes Pd[O2CC(R1)=NOR2]2 (1) and Pd[O2CC(R1)=NR2]2 (2, R2 optically active substituent) are synthesized by template condensation of an α-oxocarboxylic acid with a hydroxylamine or amine component, respectively. Similarly, the Rh(III) complexes Cp*Rh(Cl)[O2CC(R)=N(CHMePh)] (3a: R = H, 3b: R = Me) were obtained from α-oxocarboxylic acids and optically active 1-phenylethylamine. Catalytic hydrogenation of 1 and 2 gives directly the free α-amino acids with, in case of 2, ee's between 0 and 36%. Nucleophilic attack by the carbanions of RC(O)CH2CO2Et and H2NCH(CO2Et)2 at the imino carbon atom of 3a leads to the α-amino carboxylato complexes 4 and 5. - Compounds 4a and 5 have been characterized by X-ray diffraction. Reaction of 3a with NaBH4 or NaBD4 followed by decomposition of the complex with HCl yields N-substituted glycine and N-substituted α-deuterio-glycine, respectively. The diastereoselectivity (70:30) of the α-deuteration could be determined by NMR spectroscopy.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19931261113
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  • 5
    Electronic Resource
    Electronic Resource
    Metallkomplexe mit biologisch wichtigen Liganden, IL. Palladium- und Platin(II)-Komplexe von Thioglycinat und Thioalaninat (1989)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 122 (1989), S. 253-257 
    Details
    ISSN: 0009-2940
    Keywords: Palladium complexes ; Platinum complexes ; Thioglycinate ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Metal complexes with biologically important Ligands, IL. - Palladium and Platinum(II) complexes of Thioglycinate and ThioalaninateFrom chloro phosphane complexes and thioglycinate or thioalaninate the chelate complexes (1) (r2 = Et, Ph, n-Bu) and (2) (M = Pd, Pt) have been obtained. Spectroscopic data and the X-ray analysis of 1a (R1 = H; R2 = Et) indicate bonding of the α-Amino acylchloride complexes Cl2Pt(NH2CHRCOCl)2 react with thiophenol to give Cl2Pt(NH2CHRCOSPh)2 (4) (R = H, CHMe2).
    Notes: Aus Chloro-phosphan-Metallverbindungen werden mit Thioglycinat bzw. Thioalaninat die Chelat-Komplexe (1) (r2 = Et, Ph, n-Bu) und (2) (M = Pd, Pt) erhalten. Nach den spektroskopischen Daten und der Kristallstrukturbestimmung von 1a (R1 = H; R2 = Et) koordinieren die Anionen der α-Aminothiosäuren über die Aminogruppe und das S-Atom. Aus α-Aminosäure-chlorid-Komplexen Cl2Pt(NH2CHRCOCl)2 entstehen mit Thiophenol in heterogener Reaktion die Verbindungen Cl2Pt-(NH2CHRCOSPh)2 (4) (R = H, CHMe2) mit α-Aminothiosäure-S-phenylester-Liganden.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19891220207
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  • 6
    Electronic Resource
    Electronic Resource
    Metallkomplexe mit biologisch wichtigen Liganden, LVIII. C-Allylglycin- und C-Vinylglycin-Komplexe von Palladium(II), Platin(II), Rhodium(III), Iridium(III) und deren Reaktionen mit Nucleophilen (1991)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 124 (1991), S. 1065-1073 
    Details
    ISSN: 0009-2940
    Keywords: Palladium complexes ; Platinum complexes ; Rhodium complexes ; Iridium complexes ; Glycine, C-allyl-, C-vinyl- ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Metal Complexes of Biologically Important Ligands, LVIII. - C-Allylglycine and C-Vinylglycine Complexes of Palladium(II), Platinum(II), Rhodium(III), Iridium(III) and Reactions with NucleophilesThe synthesis of the complexes (R13P)(Cl2Pt(C-allylglycine ester) (1), (2) and of (η5-C5Me5)Ir(C-allylglycinate) (6) with tridentate O,N,η2;-C—C allylglycinate as ligand is described. Addition of enolates (Nu-) to the coordinated C=C bond of 2 gives the γ-C-metallated α-amino acid ester complexes (3). In most cases the platination occurs stereoselectively to yield the five-membered metallacycle with the substitutents CH2Nu and CO2R2 in trans position. From 3d the new α-amino acid H2NCH(CO2Me)-(CH2)3C(Ph)(CO2Et)21 (4) is cleaved. The structures of 3c and 6 have been determined by X-ray diffraction. C-Vinylglycinate can be stabilized at the metal atom in the complexes (10) (M=Rh, Ir).
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19911240513
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  • 7
    Electronic Resource
    Electronic Resource
    Metallkomplexe mit biologisch wichtigen Liganden, LX. Metallkomplexe von 3′-Azido-3′-desoxythymidin (AZT) und 3′-Isocyan-3′-desoxythymidin (1991)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 124 (1991), S. 1541-1548 
    Details
    ISSN: 0009-2940
    Keywords: Gold complexes ; Palladium complexes ; Platinum complexes ; Rhodium complexes ; Iridium complexes ; 3′-Azido-3′-deoxythymidine ; 3′-Isocyano-3′-deoxythymidine ; Anti-HIV ; Antiinflammatory activity ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Metal Complexes of Biologically Important Ligands, LX.  -  Metal Complexes of 3′-Azido-3′-deoxythymidine (AZT) and 3′-Isocyano-3′-deoxythymidineMetal complexes of N-3-deprotonated 3′-azido-3′-deoxythymidine (AZT  -  H+), (AZT  -  H+)AuPR3 (R = Me, Et, Ph) (2, 3, 4), trans-(AZT  -  H+)2Pd(NH3)2 (5), [(n-Bu3P)(AZT  -  H+) M(μ-Cl)2M(AZT  -  H+)(n-Bu3P)] (M = Pd, Pt) (6, 7), trans-(Ph3P)2Pd(AZT  -  H+)2 (8), cis-(Ph3P)2Pt(AZT -  H+)(Cl) (9), and complexes of 3′-isocyano-3′-deoxythymidine (L), (Et3P)(L)- PdCl, (11), (12), (n-Bu3P)(L)PtCl2 (13), [(Ph3P)2(L)PtCl](BF4) (14), (η5-C5Me5)(L)RhCl2 (15), and (η5-C5Me5)(L)IrCl2 (16) have been prepared and characterized by IR and NMR spectra, 2 by X-ray crystallography. 2, 4, and 9 show an anti-HIV activity very similar to AZT; 2 exhibits antiinflammatory activity.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19911240710
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  • 8
    Electronic Resource
    Electronic Resource
    Metallkomplexe mit biologisch wichtigen Liganden, LXV. Chirale Halbsandwich-Komplexe von Cobalt(III), Rhodium(III), Iridium(III) und Ruthenium(II) mit α-Aminosäureamid-, Glycinnitril- und Peptidester-LigandenHerrn Professor Dr. H.-D. Stachel zum 65. Geburtstag gewidmet. (1993)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 126 (1993), S. 1969-1980 
    Details
    ISSN: 0009-2940
    Keywords: Cobalt complexes ; Rhodium complexes ; Iridium complexes ; Ruthenium complexes ; Pentamethylcyclopentadienyl ; α-Aminoamide ligands ; Glycinenitrile ligand ; Peptide ester ligands ; Aspartame ; Asparagine ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Metal Complexes with Biologically Important Ligands, LXV[1].  -  Chiral Half-Sandwich Complexes of Cobalt(III), Rhodium(III), Iridium(III), and Ruthenium(II) with α-Amino Amide, Glycinenitrile, and Peptide Ester LigandsCp*Co(CO)I2 (Cp* = η5-C5Me5), [(η6-arene)RuCl2]2 (arene = p-cymene, hexamethylbenzene), and [Cp*MCl2]2 (M = Rh, Ir) react with α-amino amides and various peptide esters to give the N,O-chelate complexes [Cp*(I)Co  -  NH2C(H)(R1)C(NHR2)-O]+ (1), [(η6-arene)(Cl)Ru  -  NH2C(H)(R1)C(NHR2)O]+ (2), and [CP*(Cl)M - NH2CH2C(NHR)O]+ (M = Rh, Ir) (5, in solution), respectively. In the solid state the ligands are η1N-bonded in 5. By deprotonation of the peptide bond in 2 and 5 the neutral N, N-chelate complexes (η6-arene)(Cl)Ru  -  NH2C(H)(R1)C(O)-N̊2 (6) and Cp*(Cl)M  -  NH2C(H)(R1)C(O)NR2 (M = Rh, Ir) (7) have been obtained. Glycinenitrile is η1-bonded in (η6-p-cymene)(Cl)2Ru(NH2CH2CN) (3) and Cp*(Cl)2Rh(NH2CH2CN) (4). Double deprotonated triglycine methyl ester is a N,N,N-tridentate ligand in (η6-C6Me6)Ru(NH2CH2C(O)NCH2C(O)-NCH2CO2Me) (8). The anions of L-asparagine and of aspartame (L-aspartyl-L-phenylalanine methyl ester) give the complexes 9-12 with tridentate O,N,O- or O,N,N-chelate ligands. The crystal structures of 1d (L = glyglyOEt), 5a (L = glycinamide), 6e (L = glyglyOEt), and 7k (L = glyglyglyOEt) have been determined by X-ray structural analysis.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19931260903
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  • 9
    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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