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  • 1
    Electronic Resource
    Electronic Resource
    Cyclopropanol derivatives as intermediates for organochemical synthesis (1970)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 92 (1970), S. 7428-7436 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja00728a029
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  • 2
    Electronic Resource
    Electronic Resource
    Interactions of indole derivatives with organic acceptors. III (1987)
    Springer
    Monatshefte für Chemie 118 (1987), S. 369-379 
    Details
    ISSN: 1434-4475
    Keywords: Charge-transfer complexes ; 1,1,2,2-Ethenetetracarbonitrile ; Molecular associations
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Es werden die Wechselwirkungen von 1-Hydroxy-2-phenylindol und 2,2′-Diphenyl-Δ3,3′-bi-3H-indol mit organischen Akzeptoren geprüft. Je nach den Eigenschaften des Akzeptors und des Donors kann die Reaktion molekulare Komplexe, Redox-Produkte oder andere Addukte ergeben. Die Reaktion von 1-Hydroxy-2-phenylindol mit Tetracyanoethylen bildet 1-Oxy-2-phenyl-3-(dicyanomethylidene)indol, dessen Kristallstruktur beschrieben wird.
    Notes: Abstract Interactions of 1-hydroxy-2-phenylindole and 2,2′-diphenyl-Δ3,3′-bi-3H-indole with common organic acceptors are analyzed. Depending on the nature of donor-acceptor partners, the reaction may afford molecular complexes, redox products or some kind of adduct. The reaction of 1-hydroxy-2-phenylindole with tetracyanoethylene leads to the formation of 1-oxy-2-phenyl-3-(dicyanomethylidene) indole whose crystal structure is reported.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00809948
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  • 3
    Electronic Resource
    Electronic Resource
    p-(tricyanovinylidene)phenylhydrazones. Nucleophilic attack on carbon-carbon double bonds (1988)
    Springer
    Monatshefte für Chemie 119 (1988), S. 1375-1384 
    Details
    ISSN: 1434-4475
    Keywords: Hydrazones ; Nucleophilic substitution reactions ; Kinetics of substitution reactions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Es wird die Substitution einer —CH-Gruppe inp-(Tricyanovinyliden)phenylhydrazonen mit Aminen geprüft. Die Reaktionsgeschwindigkeit wird von der Polarität des Lösungsmittels bestimmt; die berechneten Geschwindigkeitskoeffizienten zweiter Ordnungk ber 2 . (Substitution der —CN-Gruppe) nehmen mit der Aminkonzentration zu. Es wird die Röntgenstrukturanalyse eines Adduktes beschrieben.
    Notes: Abstract The dispacement of a —CN group inp-(tricyanovinylidene)-phenylhydrazones, induced by amines, is investigated. The rate of the reaction is dependent on the polarity of the solvent and the observed second-order rate coefficientsk obs 2 for the —CN displacement increase with the amine concentration. A X-ray analysis of one of the substituted compounds is also reported.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00810281
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  • 4
    Electronic Resource
    Electronic Resource
    Molecular associations of [2.2]paracyclophanearylhydrazones with organic acceptors, VIII (1992)
    Springer
    Monatshefte für Chemie 123 (1992), S. 73-80 
    Details
    ISSN: 1434-4475
    Keywords: Charge-transfer complexes ; Formation constant and stability constant ; Hydrazones ; Molecular association
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Es wurden Molekülkomplexe von mono- und disubstituierten [2.2]Paracyclophanarylhydrazonen mit organischen Akzeptoren mittels thermodynamischer und spektroskopischer Methoden untersucht. Zusätzlich wird der Anstieg in der Donorstärke, der von der Hydrazonogruppe induziert wird, im Hinblick auf Substituenten- und auch transannulare Effekte diskutiert.
    Notes: Summary Molecular complexes of mono and disubstituted [2.2]paracyclophanehydrazones with organic acceptors have been studied by means of thermodynamic and spectroscopic properties. Furthermore, the enhancement of the donor strength, induced by the hydrazono group, is viewed in the light of substituent as well as transannular effects.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01045299
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  • 5
    Electronic Resource
    Electronic Resource
    Molecular complexes of hydrazides with copper(II) (1992)
    Springer
    Monatshefte für Chemie 123 (1992), S. 231-236 
    Details
    ISSN: 1434-4475
    Keywords: Molecular complexes ; Formation constant ; Copper(II) choride
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die Reaktionen von substituierten Hydraziden mit Kupfer(II)chlorid wurden im Festzustand und in Lösung untersucht. Die spektroskopischen Ergebnisse und die Werte der Bildungskonstanten zeigen die Koordinierung zu starken Komplexen an.
    Notes: Summary The reaction of substituted hydrazides with copper(II) chloride was investigated in the solid state or in solution in order to account for substituent effects. Spectroscopic results and values of the formation constants indicate the occurrence of strong complexes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00810470
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  • 6
    Electronic Resource
    Electronic Resource
    Crystal structure of the complex between 7,7,8,8-tetracyanoquinodimethane and 1-oxide-2-phenyl-quinoline (1990)
    Springer
    Journal of chemical crystallography 20 (1990), S. 419-423 
    Details
    ISSN: 1572-8854
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract A series of complexes between 1-oxide quinolines and 7,7,8,8-tetracyanoquinodimethane has been synthesized and one of them has been analyzed by x-ray diffraction methods. Crystals of the title compound are monoclinic (C15H11NO·C12H4N4), space groupP21/n,a=44.525(4),b=7.326(2),c=6.531(2) Å,β=90.23(3)°. The structure was solved by direct methods and refined by block-matrix least-squares to giveR=0.047 for 1865 reflections above 2σ(I). Molecular dimensions, interplanar distances, empirical method and IR spectra suggest a π-π* interaction with very low charge-transfer in the complex.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01180107
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  • 7
    Electronic Resource
    Electronic Resource
    Molecular associations of 5-membered benzofused heterocyclic donors with organic acceptors (1990)
    Springer
    Journal of chemical crystallography 20 (1990), S. 561-569 
    Details
    ISSN: 1572-8854
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract Benzofused heterocycles like 10H-[1]benzo thieno[3,2-b] indole and thieno[3,2-b]benzo[b]thiophene form molecular associations with π* organic acceptors. The weak interactions involved are viewed in terms of UV-Vis and IR techniques. The results, mainly in the case of complexes of 10H-[1]benzo thieno[3,2-b] indole, are in some disagreement with the literature. The structure of the complex 10H-[1]benzo thieno[3,2-b] indole/tetracyanoethylene is also reported. The four condensed rings constitute a conjugate system with significant lengthenings of the aromatic ring bonds and a shortening of those of the five-membered rings. The fragment as a whole is almost planar, and forms a dihedral angle of 39.9(1)° with the planar tetracyanoethylene molecule.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01221898
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  • 8
    Electronic Resource
    Electronic Resource
    Complexes of azobisindoles with π-organic acceptors (1995)
    Springer
    Journal of chemical crystallography 25 (1995), S. 683-691 
    Details
    ISSN: 1572-8854
    Keywords: Infrared spectra ; Raman spectra ; molecular associations ; azo compounds
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract Complexes of azobisindoles with tetracyanoethylene and tetracyanoquinodimethane were studied by UV-Vis, FT-IR, Raman, NMR and X-ray spectroscopies. FT-IR and Raman spectra, as well as X-ray analysis, gave useful information on the participation of various sites to the association, through analysis of CN and N=N vibrational modes, while UV-Vis and NMR spectra were less helpful. The crystal structure of complexes 1-ethyl-2-phenyl-3-(1-ethyl-2-phenyl-3-azoindole)indole/TCNE,3a and 1,2-diphenyl-3-(1,2-diphenyl-3-azoindole)indole/TCNQ,5b are reported. In the two complexes, the distances between donor and acceptor planes range between 3.4 and 3.5 Å; in3a tetracyanoethylene faces the phenyl ring of the indole, while in5b the superposition of tetracyanoquinodimethane with the donor is negligible. Compound3a,P−1,a=9.504(2),b=9.513(3),c=8.941(2) Å, α=97.81(4), β=103.38(3), γ=84.14(2)°,Z=2,D calc=2.55 g cm−3; compound5b,P−1,a=12.648(3),b=12.205(2),c=7.263(3) Å, α=103.69(2), β=91.23(3), γ=110.61(2)°,Z=2,D calc=2.53 g cm−3.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01665976
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  • 9
    Electronic Resource
    Electronic Resource
    2,2′-Diphenyl-Δ3,3′-bi-3H-indole-1,1′-dioxide: Molecular interactions and crystal structure (1988)
    Springer
    Monatshefte für Chemie 119 (1988), S. 487-494 
    Details
    ISSN: 1434-4475
    Keywords: Charge transfer complexes ; Molekular associations ; 2,2′-Diphenyl-Δ3,3′-bi-3H-indole-1,1′-dioxide
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Das Dinitron 2,2′-Diphenyl-Δ3,3′-bi-3H-indol-1,1′-dioxid wirkt als Demethylierungs- und Oxydationsmittel. Die Wechselwirkung des Dinitrons mit Elektronen-Acceptoren und Elektronen-Donatoren geht wegen der Selbstassoziation zwischen den Dinitron-Molekülen ohne die dazwischenliegende Bildung eines Charge-Transfer-Komplexes vor sich; das wird auch von Röntgenstrukturuntersuchungen gestützt. Die Kristallstruktur wurde mit direkten Methoden ermittelt:a=9.967 (2),b=19.817 (3),c=10.875 (2) Å; β=111.2 (2)°. P21/n. Die endgültigen WerteR undR w waren 0.089 und 0.063 für alle gemessenen Reflexe.
    Notes: Abstract The Dinitrone 2,2′-diphenyl-Δ3,3′-bi-3H-indole-1,1′-dioxide acts as a demethylating and dehydrogenating agent. The mechanism of interaction of the dinitrone with donors and acceptors does not involve intermediate charge-transfer complexes probably due to a self association between dinitrone molecules (as supported by X-ray determinations). The crystal structure of the dinitrone was obtained by direct methods;a=9.967 (2),b=19.817 (3),c=10.875 (2) Å, β=111.2 (2)°, space group P21/n. The finalR andR w were 0.089 and 0.063 for all measured reflexes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00810429
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  • 10
    Electronic Resource
    Electronic Resource
    Molecular interactions between arylazopyridines and N-hydroxyindoles (1990)
    Springer
    Monatshefte für Chemie 121 (1990), S. 165-171 
    Details
    ISSN: 1434-4475
    Keywords: Charge-transfer complexes ; Hydrogen bond ; 1-Hydroxy-2-phenylindole
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die Reaktion isomerer Arylazopyridine mit 1-Hydroxy-2-phenylindol führt zu molekularen Associaten zwischen den Pyridin-Derivaten und 1-Hydroxy-2-phenylindol oder seinem Dimer. Die Rolle der Hydrogenbindung bei der Bildung der Komplexverbindung wird mittels Leitfähigkeitsmessungen geprüft.
    Notes: Summary The reaction of isomeric arylazopyridines with 1-hydroxy-2-phenylindole leads to molecular associations between the pyridine derivative and the 1-hydroxy-2-phenylindole itself or its dimer. The role of hydrogen bonding in the formation of the complex is also discussed in the light of conductivity measurements.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00809529
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