Formation of a one-dimensional array of oxygen in a microporous metal-organic solid.
We report the direct observation of dioxygen molecules physisorbed in the nanochannels of a microporous copper coordination polymer by the MEM (maximum entropy method)/Rietveld method, using in situ high-resolution synchrotron x-ray powder diffraction measurements. The obtained MEM electron density revealed that van der Waals dimers of physisorbed O2 locate in the middle of nanochannels and form a one-dimensional ladder structure aligned to the host channel structure. The observed O-O stretching Raman band and magnetic susceptibilities are characteristic of the confined O2 molecules in one-dimensional nanochannels of CPL-1 (coordination polymer 1 with pillared layer structure).
Kitaura
Ryo
R
Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan.
Kitagawa
Susumu
S
Kubota
Yoshiki
Y
Kobayashi
Tatsuo C
TC
Kindo
Koichi
K
Mita
Yoshimi
Y
Matsuo
Akira
A
Kobayashi
Michihiro
M
Chang
Ho-Chol
HC
Ozawa
Tadashi C
TC
Suzuki
Megumi
M
Sakata
Makoto
M
Takata
Masaki
M