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  • Electron Localization Function  (1)
  • 1990-1994  (1)
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  • 1990-1994  (1)
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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 619 (1993), S. 437-441 
    ISSN: 0044-2313
    Keywords: closo boron clusters ; structure ; Hartree-Fock ; pseudopotential ; Electron Localization Function ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The Electron Localization Function in closo Boron ClustersThe structure and the electron density in the closo boron clusters B4X4 (X = H, Cl, Br, I), B6X62- (X = H, Cl, Br, I) and B12H122- were determined by pseudopotential Hartree-Fock calculations. The Electron Localization Function (ELF) was used to interpret the bonding characteristics. The regions of high ELF values in all cases have the form of the dual polyhedron of the boron cage. They show perfectly the 3 center 2 electron bonds. The comparison between Hartree-Fock and Extended Hückel calculations point out that semiempirical calculations can also be a good basis for ELF interpretations.
    Notes: Die Struktur und die Elektronendichte der closo-Bor-Cluster B4X4 (X = Br, I), B6X62- (X = H, Cl, Br, I) und B12H122- wurden mittels Pseudopotential-Hartree-Fock-Rechnungen bestimmt. Die Interpretation der Bindungsverhältnisse erfolgte durch Auswertung der Elektronen-Lokalisierungs-Funktion (ELF). Die Bereiche hohen ELF-Wertes besitzen in allen Fällen die Form des zum Bor-Gerüst dualen Polyders. Sie lassen die 3-Zentren-2-Elektronen-Bindungen besonders gut erkennen. Der Vergleich zwischen Hartree-Fock- und Extended-Hückel-Rechnungen zeigt, daß auch semiempirische Verfahren eine gute Grundlage für eine ELF-Interpretation sein können.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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