Library

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    International Journal of Quantum Chemistry 4 (1970), S. 347-353 
    ISSN: 0020-7608
    Keywords: Computational Chemistry and Molecular Modeling ; Atomic, Molecular and Optical Physics
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The charge on each atom of some ethers and chloro-substituted ethers, their dipole moments and the quadrupole coupling constants of the chloroethers have been calculated with the method suggested by Del Re. There appears to be an intimate connection between the charge density on the oxygen atoms and the capacity of forming hydrogen bond.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    International Journal of Quantum Chemistry 2 (1968), S. 687-694 
    ISSN: 0020-7608
    Keywords: Computational Chemistry and Molecular Modeling ; Atomic, Molecular and Optical Physics
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Les hyperpolarizabilités du benzène ont été calculées à partir d'un modèle à électrons libres pour le système d'électrons π. La première hyperpolarisabilité est zéro, tandis que pour la seconde hyperpolarisabilité seulement les composantes γzzzz, γxxxx, γyyyy, γzzxx, γzzyy, γxxyy sont différentes de zéro. Quelques-unes de ces quantités γ montrent de la dispersion près de la bande d'absorption caractéristique du benzène ainsi que la polarisabilité α du système d'électrons π.
    Abstract: Die Hyperpolarisierbarkeiten des Benzols wurden mit einem Freielektronenmodell für das π-Elektronensystem berechnet. Die erste Hyperpolarisierbarkeit verschwindet identisch und für die zweite Hyperpolarisierbarkeit sind nur die Komponenten γzzzz, γxxxx, γyyyy, γzzxx, γzzyy, γxxyy von Null verschieden. Einige dieser γ-Grössen zeigen Dispersion nahe der charakteristischen Absorptionsbande des Benzols, was auch für die Polarisierbarkeit α des π-Elektronensystems der Fall ist.
    Notes: The hyperpolarizabilities of benzene have been calculated using a free-electron model for the π-electron system. The first hyperpolarizability is identically zero. For the second hyperpolarizability only the components γzzzz; γxxxx; γyyyy; γzzxx; γzzyy; γxxyy are non-zero. Some of these γ quantities show dispersion near the characteristic absorption band of the benzene molecule. The polarizability α of the π-electron system also shows similer dispersion.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    International Journal of Quantum Chemistry 3 (1969), S. 611-619 
    ISSN: 0020-7608
    Keywords: Computational Chemistry and Molecular Modeling ; Atomic, Molecular and Optical Physics
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Using a three dimensional free-electron model for the π-electron system the energies of the various singly and doubly excited configurations of benzene have been calculated. It has been found that the energies of the various singly excited configurations are in good agreement with the values obtained by Craig; whereas the energies of the doubly excited configurations are higher than those obtained by Craig. Therefore the configurational mixing for the doubly excited configurations is not necessary in this kind of model.
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 4
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    International Journal of Quantum Chemistry 2 (1968), S. 183-186 
    ISSN: 0020-7608
    Keywords: Computational Chemistry and Molecular Modeling ; Atomic, Molecular and Optical Physics
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: La durée de vie de l'état triplet du benzène de la bande à 330 mμ a été estimée à environ 36 sec au moyen du modèle des électrons libres. Cela est en bon accord avec la valeur expérimentale corrigée qui est 30 sec. On a démontré aussi que le singulet perturbant est un singulet π-σ plutǒt qu'un singulet π-π.
    Abstract: Die Lebensdauer des Triplettzustands in der 330 mμ Bande von Benzol wurde mit dem Freielektronenmodell zu ungefähr 36 Sek abgeschätzt, was mit dem korrigierten Experimentalwert 30 Sek wohl übereinstimmt. Es wurde auch erwiesen, dass der störende Singulett ein π-σ-Singulett eher als ein π-π-Singulett ist.
    Notes: Using the free-electron model the triplet-state lifetime of benzene for the 330 mμ band has been estimated to be about 36 sec, which compares favourably with the corrected experimental value of 30 sec. It has also been established that the perturbing singlet must be a π-σ singlet rather than a π-π singlet.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 5
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    International Journal of Quantum Chemistry 3 (1969), S. 1-2 
    ISSN: 0020-7608
    Keywords: Computational Chemistry and Molecular Modeling ; Atomic, Molecular and Optical Physics
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...