Single crystal structure analysis of the Se-incorporated mordenite, coupled with the anomalous X-ray scattering

Mordenite has one-dimensional 8-ring and 12-ring channels running parallel to the c-axis and Se molecules were successfully incorporated into the mordenite channels through a vapor phase after dehydration. The structure of the Se-incorporated mordenite was analyzed by single crystal X-ray diffraction coupled with anomalous X-ray scattering (AXS). The AXS analysis confirmed the Se distribution in the 12-ring channels only, by analyzing the intensity contrast observed at the Se K-absorption edge. And this environmental structure information allows us to improve the structural analysis of the ordinary single crystal X-ray diffraction. The present analysis suggested that Se molecules such as an infinite chain and its fragments were preferentially formed in the 12-ring channels together with the feasible bonding of Se-Na pairs. The location and probability of Na in the 12-ring channels are suggested to be considered as important factors affecting the probability of Se chain and its fragmentation.

Sugiyama, K. (author)
Yu, J. (author)
Qiu, S. (author)
Terasaki, OsamuStockholms universitet,Avdelningen för oorganisk kemi och strukturkemi(Swepub:su)Osate (author)
Stockholms universitetAvdelningen för oorganisk kemi och strukturkemi (creator_code:org_t)

By the author/editor: Togashi, N.; Sugiyama, K.; Yu, J.; Qiu, S.; Terasaki, Osamu

About the subject

NATURAL SCIENCES: NATURAL SCIENCES; and Chemical Science ...; and Inorganic Chemis ...

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