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  • Activation energy  (1)
  • Force constants  (1)
  • Pseudolattice calculations  (1)
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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Theoretical chemistry accounts 75 (1989), S. 307-319 
    ISSN: 1432-2234
    Keywords: Band assignments ; Normal modes ; IR-zeolites ; Pseudolattice calculations ; Force constants
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Normal mode calculation of A-type zeolite was carried out with the potential energy functions obtained from the constraint method. Mass-weighted cartesian coordinates and the pseudo-lattice method were used. The assignments of IR absorption bands were made with the calculated normal modes, by using the calculated absorption intensities of the modes and the degrees of contribution of the internal coordinates to the modes. The force constants of internal coordinate motions within the framework were also calculated and are compared with the empirical values.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Theoretical chemistry accounts 75 (1989), S. 461-474 
    ISSN: 1432-2234
    Keywords: Molecular mechanics ; Activation energy ; Zeolites
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Potential energy functions suitable for the (Cs1−xNaxT2O4)-A type zeolite family were obtained from the known crystal structure of Cs7Na5-A zeolite. Using these potential functions, several other crystal structures in these family were obtained by molecular mechanical calculations. The activation energy α- to α-cage transmission of the H2 molecule and the void volume of Cs3Na9-A zeolite were calculated.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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