The structure of cesium-exchanged zeolite-RhO at 293K and 493K determined from high resolution neutron powder data

The crystal structure of Cs-exchanged zeolite Rho (14̄3m) has been solved using neutron powder data collected at 293K and 493K. The model differs from that proposed by Robson, Shoemaker, Ogilvie, and Manor (1973) for the hydrogen form. Structure modeling studies (DLS) suggested a starting point for the refinement. Cs at ( 1 2, O, O) is in the elliptically distorted double 8-ring blocking absorption. An increase in temperature decreases the elliptical distortion of the double 8-ring which is restored at lower temperature.