Abstract
The number of self-avoiding walks, un, in several zeolitic frameworks has been calculated up to distances n higher than 20 steps. This allows us to estimate the 'connective constant' or effective coordination number of these structures as the limit of the ratio un/un-1 for large n. This parameter is correlated with the density of tetrahedra in the zeolite networks, and is shown to be very useful for characterizing the network connectivity, as well as quantifying the influence of the framework topology on the Si, Al atom ordering in these materials.
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