Normal Coordinate Analysis of the Framework Vibration in ZSM-5 Zeolite

The Structure of ZSM-5 is based on the double—five ring. In this work, we choose T₁₀O₁₂ as a basic model to deal with its structure. Four kinds of previous force fields are used for the calculation, but the results are not satisfied. When we conbine Badgen’s force field with Batsanov’s one, the calculated frequencies become much better. The suitable assignments are also given to the mid—infared spectra of ZSM—5 zeolite.