**************** The 4th., Lab Seminar ****************************

Date: Mon, May 28, 2007  PM 1:30-

Place: No.616 Seminar room
　　　　　　 Graduate School of Information Science

Speaker: Yusuke Ohta

Title: Metastable Sorption State of a Metal-Organic Porous Material
Determined by In Situ Synchrotron Powder Diffraction
（Kubota, Y.; Takata, M; Matsuda, R.; Kitaura, R.; Kitagawa, S.;
Kobayashi, T. C., Angew. Chem. Int. Ed., 2006, 45, 4932）

Abstract:
 Previously, the authors reported the gas acetylene adsorption in CPL-1.
From accurate structural analysis, acetylene molecules were found to be
trapped by forming double hydrogen bonds with the uncoordinated
carboxylate oxygen atoms.   In situ powder diffraction patterns for
gas adsorption between the anhydrous hollow phase (I phase) and the
saturated adsorbed phase (S phase) revealed another phase.   That is,
the intermediate phase of adsorption at about 0.7 molecules
per 1 unit cell, which the authors call the intermediate M phase.

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