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  • Inorganic Chemistry  (16)
  • 1990-1994  (16)
  • 1940-1944
  • 1930-1934
  • 1991  (16)
  • 1
    Electronic Resource
    Electronic Resource
    Dispiro-1,2,4-trioxolane durch Ozonolyse von Cycloalkylidencycloalkanen auf Polyethylen (1991)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 124 (1991), S. 391-396 
    Details
    ISSN: 0009-2940
    Keywords: Ozonolysis ; Cycloalkylidenecycloalkanes ; Dispiro-1,2,4-trioxolanes ; Thermolysis ; Photolysis ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Dispiro-1,2,4-trioxolanes by Ozonolysis of Cycloalkylidenecycloalkanes on PolyethyleneOzonolyses of symmetrical (1b - d) and of unsymmetrical cycloalkylidenecycloalkanes (8a, b) afforded the dispiro-1,2,4-trioxolanes 4b - d and 9a, b, respectively. Their thermal decompositions gave mixtures of the cyclic ketones (3) and lactones (6). Photolyses afforded in addition to 3 and 6 the cyclic anhydrides 13, which are isomeric with the corresponding dispiro-1,2,4-trioxolanes.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19911240224
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  • 2
    Electronic Resource
    Electronic Resource
    Kohlenwasserstoffverbrückte Metallkomplexe, XVIII. Heterometallische Ethylen-verbrückte Komplexe (OC)5ReCH2CH2Mn(CO)5, (OC)5ReCH2CH2Ru(CO)2Cp, (OC)5ReCH2CH2Os(CO)4CH2CH2Re(CO)5 und (OC)5ReCH2CH2CH2Os(CO)4Os(CO)4(CO)4Os(CO)4CH2CH2Re(CO)5 (1991)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 124 (1991), S. 1059-1063 
    Details
    ISSN: 0009-2940
    Keywords: Ethylene-bridged metal complexes ; Ethanediyl complexes ; Manganese, Rhenium, Ruthenium, Osmium carbonyls ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Hydrocarbon-Bridged Metal complexes, XVIII. - Heterometallic Ethylene-Bridged Complexes (OC)5ReCH2CH2Mn(CO)5, (OC)5ReCH2CH2Ru(CO)2Cp, (OC)5ReCH2CH2Os(CO)4CH2CH2Re(CO)5 and (OC)5ReCH2CH2CH2Os(CO)4Os(CO)4(CO)4Os(CO)4CH2CH2Re(CO)5Addition of [(OC)5Re(C2H4)]+ to the carbonylmetallates [Mn(CO)5]-, [RuCp(CO)2]-, [Os(CO)4]2-, [Os3(CO)12]2- affords the title complexes in a directed way. The dynamic behaviour of (OC)5ReCH2CH2Mn(CO)5 in solution is attributed to a dyotropic exchange of the pentacarbonylmetal groups on the CH2CH2 bridge.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19911240512
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  • 3
    Electronic Resource
    Electronic Resource
    Kohlenwasserstoffverbrückte Metallkomplexe, XXI Addition von Tetracarbonylosmat und -ruthenat an koordinierte ungesättigte Kohlenwasserstoffe: Dreikernige Komplexe mit zwei σ,α-Allyl-, Methylallyl-, Cyclohexadien-, Cycloheptadien-, Cyclohexadienyl-, Cycloheptatrien- und „Thiophen“-Brücken (1991)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 124 (1991), S. 2237-2244 
    Details
    ISSN: 0009-2940
    Keywords: Trinuclear carbonyl complexes ; Molybdenum complexes ; Manganese complexes ; Iron complexes ; Ruthenium complexes ; Osmium complexes ; σ,α-Hydrocarbon bridges ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Hydrocarbon-bridged Metal Complexes, XXI. - Addition of Tetracarbonylosmate and -ruthenate to Coordinated Unsaturated Hydrocarbons: Trinuclear Complexes with two σ,α-Allyl, Methylallyl, Cyclohexadiene, Cycloheptadiene, Cyclohexadienyl, Cycloheptatrien, and “Thiophene” Bridges The addition of organometallic nucleophiles [M(CO)4]2- (M = Os, Ru) to [(Cp)(ON)(OC)Mo(allyl)]+, [Cp(OC)2Mo(butadiene)]+, [(OC)3Fe(cycloheptadienyl)]+, [(OC)3Fe(cycloheptadienyl)]+, [(OC)3Mn(benzene)]+, [(OC)3Mn(thiophene)]+, [(OC)3-Mo(cycloheptatrienyl)]+ leads to the heterotrimetallic η1:η2-, η1:η3-, η1:η4-, η1:η5-, η1:η6-hydrocarbon-bridged complexes 1 - 7. The structures of cis-(OC)4Os[(μ-η1:η4-C7H9)Fe(CO)3]2 (4), cis-(OC)4Os[(μ-η1:5-C6H6-Mn(CO)3]2 (6), and cis-(OC)4Os-[μ-η1:η6-C7H7-Mo(CO)3]2 (7b) have been determined by X-ray analysis. The fluxional behaviour of 6 in solution has been studied in a temperature range from - 70 to +60°C. The comparison of observed and calculated 1H-NMR data indicates a 1,2-shift mechanism (ΔG+ = 49 kJ/mol).
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19911241015
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  • 4
    Electronic Resource
    Electronic Resource
    Metallkomplexe mit biologisch wichtigen Liganden, LXIII Aspartam als dreizähniger Ligand in metallorganischen Komplexen: Darstellung und Struktur von Cp*Rh[O2CCH2CH(NH2)C(O)NCH(CH2Ph)CO2Me] (1991)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 124 (1991), S. 2429-2430 
    Details
    ISSN: 0009-2940
    Keywords: Aspartame ; L-Aspartyl-L-phenylalanine methyl ester ; Rhodium complex ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Metal Complexes of Biologically Important Ligands, LXIII1).  -  Aspartame as Tridendate Ligand in Organometallic Complexes: Preparation and Structure of Cp*Rh[O2CCH2CH(NH2)C(O)NCH(CH2Ph)CO2Me]Aspartame reacts with [Cp*RhCl2]2 in the presence of base to give the title complex 1 with the deprotonated tridendate dipeptide ester as ligand.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19911241109
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  • 5
    Electronic Resource
    Electronic Resource
    Dirhenioethin (OC)5Re-C≡C-Re(CO)5 als Baustein zum Aufbau von Carbonyl-Metall-ClusterverbindungenHerrn Professor Paul Binger zum 60. Geburtstag gewidmet. (1991)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 124 (1991), S. 1363-1368 
    Details
    ISSN: 0009-2940
    Keywords: μ-(Ethynediyl)bis(pentacarbonylrhenium) ; Acetylide-bridged carbonyl metal clusters ; Iron carbonyl complexes ; Cobalt carbonyl complexes ; Platinum carbonyl complexes ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Dirhenioethyne (OC)5Re-C≡C-Re(CO)5 as Building Block for the Synthesis of Carbonyl Metal ClustersThe dimetallated ethyne (OC)5Re-C≡C-Re(CO)5 (1) reacts with (Ph3P)2Pt(η2-C2H4), Fe2(CO)9, and Co2(CO)8 to give the acetylide-bridged complexes PtRe2(μ3-η1:η1:η2-C≡C)(CO)9-(PPh3)2 (2), FeRe2(μ3-μ1:η1:η2-C≡C)(CO)13 (3), and Co2Re2-(μ4-η1:η1:η2:η2-C≡C)(CO)14 (4), resp., whose structures have been determined by X-ray diffraction. These reactions of (CO)5Re-C≡C-Re(CO)5 proceed similarly to those of the isolobal organic acetylenes, but with formation of metal-metal bonds.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19911240609
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  • 6
    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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  • 7
    Electronic Resource
    Electronic Resource
    Kohlenwasserstoffverbrückte Komplexe XX Nucleophile Addition von Carbonylmetallaten an kationische Hexadienyl-, Cycloheptadienyl-, Cycloheptadienyl- und Cyclooctadienyl-Komplexe von Eisen und Ruthenium: Heterodimetall-Komplexe mit η1:η4-C6-, -C7- und -C8-Kohlenwasserstoffbrücken (1991)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 124 (1991), S. 2227-2236 
    Details
    ISSN: 0009-2940
    Keywords: Heterobimetallic complexes ; Tungsten complexes ; Iron complexes ; Ruthenium complexes ; Manganese complexes ; Rhenium complexes ; Diene bridges, σ,π-C6, -C7, and -C8 ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Hydrocarbon-Bridged Metal Complexes, XX. - Nucleophilic Addition of Carbonyl Metallates to Cationic Hexadienyl, Cyclohexadienyl, Cycloheptadienyl, and Cyclooctadienyl Complexes of Iron and Ruthium: Heterobimetallic Complexes with η1:η4, -C6, -C7, and -C8 Hydrocarbon BridgesThe addition of Re(CO)-5, Mn(CO)-5, and [(η5-C5H5)W(CO)3]- to the cationic dienyl complexes [(η5-dienyl)M(CO)3]+ (M = Fe, Ru; dienyl = hexadienyl, cyclohexadienyl, cycloheptadienyl, cyclooctadienyl, bicyclo[5.1.0]octadienyl) gives the heterobimetallic η1:η4-hydrocarbon-bridged complexes 1 - 4, 6, 7. In solution the initial nucleophilic adduct 2e of [(η5-cyclo-hexadienyl)Ru(CO)3]+ and [Re(CO)5]- rearranges to the complex 3, in which the Re(CO)5 group is bound to a sp2 carbon atom. By using Mn(CO)-5 also the products of electron transfer between cation and anion have been observed. The crystal structures of (OC)3Fe(μ-η4:η1-hexadiene)Re(CO)5 (1), (OC)3Ru(μ-η4:η1-cyclohexadiene)Re(CO)5(3), (OC)3Fe(η4:η4-C7H9 - C7H9)Fe(CO)3 (5), (OC)3Ru(μ-η4:η1-cyclooctadiene)Re-(CO)5 (6b), and of (OC)3Fe(η4:η1-bicyclo[5.1.0]octadiene)-Re(CO)5 (7) have been determined by X-ray diffraction.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19911241014
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  • 8
    Electronic Resource
    Electronic Resource
    Lösliche (Tetraethylphthalocyaninato)eisen(II)- und -cobalt(II)-Verbindungen (1991)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 124 (1991), S. 2315-2321 
    Details
    ISSN: 0009-2940
    Keywords: Tetraethylphthalocyanine, metal complexes of ; Isocyanide complexes, bridged ; Porphyrines ; Semiconductors, organic ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Soluble (Tetraethylphthalocyaninato)iron(II) and -cobalt(II) CompoundsThe (tetraethylphthalocyaninato)iron and -cobalt compounds Et4PcFe (9), Et4PcCo (8), and Et4PcH2 (7) have been synthesized starting from 3,4-dibromoacetophenone (1) via the corresponding dinitrile 5 or isoindolenine 6, respectively. Et4PcFe (9) reacts with tBuNC, p-diisocyanobenzene (dib), and me4dib to form the bisaxially coordinated compound Et4PcFe(tBuNc)2 (10) and the oligomers [Et4PcFe(dib)]n (11) and [Et4PcFe- (me4dib)]n (12). All of the synthesized compounds, except the oligomers with a chain length of more than 8 - 14 units, are soluble in organic solvents such as chloroform or toluene. The new compounds were characterized by 1H-, 13C-NMR, 13C-CP/NMR, UV/Vis, and IR spectra. In addition the redox properties of Et4PcCo (8) were studied by cyclic voltammetry and spectroelectrochemical methods. The Mößbauer spectra of the (phthalocyaninato)iron compounds 9, 11, and 12 demonstrate the bridged structure of [Et4PcFe(L)]n (L = dib, me4dib) (11, 12). The powder conductivity of [Et4PcFe(dib)]n (11) (σRT = 5·10-6 S/cm) is ca. 106 times higher than that of Et4PcFe (9) (σRT = 9·10-12 S/cm). After doping with iodine the oligomers 11 and 12 show an increase in conductivity of 105 and 104, respectively (σRT ≍ 10-2 S/cm for [Et4PcFe(dib)I0.85]n).
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19911241026
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  • 9
    Electronic Resource
    Electronic Resource
    Kohlenwasserstoffverbrückte Metallkomplexe, XXII1) Addition von anionischen Fischer-Carben-Komplexen an koordinierte ungesättigte Kohlenwasserstoffe unter C - C-Kupplung (1991)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 124 (1991), S. 2431-2434 
    Details
    ISSN: 0009-2940
    Keywords: Fischer carbene complexes, anionic ; Carbene, methoxy(pentacarbonylrheniopropyl) ; Chromium complexes ; Molybdenum complexes ; Tungsten complexes ; Rhenium complexes ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Hydrocarbon-Bridged Metal Complexes, XXII1). - Addition of Anionic Fischer Carbene Complexes to Coordinated Unsaturated Hydrocarbons with C - C CouplingThe addition of [(OC)5MC(OMe)CH2]- (M = Cr,W) to the cationic complexes [(OC)5Re(C2H4)]+ and [(OC)3M' (λ7-C7H7)]+ (M' = Cr, Mo) affords the bimetallic hydrocarbon-bridged complexes (OC)5M = C(OMe)CH2CH2CH2Re(CO)5 (1) and (OC)5M = C(OMe)CH2C7H7 - λ6 - M'(CO)3 (2), respectively. The structures of 1a and 2d have been determined by X-ray diffraction.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19911241110
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  • 10
    Electronic Resource
    Electronic Resource
    Tellurium Cations by Lewis Acid-Base Reactions: Syntheses and Crystal Structures of (Te24⊕)Zr2Br210⊖ and (TeBr3p⊕)(Zr2Br9⊖) (1991)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 124 (1991), S. 677-681 
    Details
    ISSN: 0009-2940
    Keywords: Bromozirconate(IV) ; Di-μ-bromooctabromodizirconate(2-) ; Tri-μ-Bromohexabromodizirconate(-) ; Tetratellurium(2+) ; Tribromotellurium(+) ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: ZrBr4 reacts with Te2Br in a sealed evacuated ampoule at 210°C in quantitative yield to afford (Te24⊕)(Zr2Br210⊖) as blueblack, moisture-sensitive crystals. The crystal-structure determination shows, that (Te4)(Zr2Br10) consists of planar, nearly square Te24⊕ and Zr2Br210⊖ ions, that form edge-sharing double octahedra. Both ions possess crystallographic 2/m (C2h) symmetry. At temperatures above 250°C (Te4)(Zr2Br10) decomposes with cleavage of Te -Te bonds into (TeBr3⊕)(Zr2Br9⊖), which forms yellow, hygroscopic crystals. (TeBr3)(Zr2Br9) can also be obtained by the reaction of two equivalents of ZrBr4 with TeBr4 at 260°C. The crystal structure is built of Zr2Br9⊖ ions, that form face-sharing double octahedra, and of pyramidal TeBr3⊕ ions. Each TeBr3⊕ ion exhibits three Te - Br contacts to two different Zr2Br9⊖ ions, resulting in a strongly deformed octahedral coordination for the Te atom. The Zr2Br9 double octahedra and the TeCl6 octahedra are connected by common edges and corners to infinite chains.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19911240402
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