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Thermodynamic aspect of reversible structural conversion induced by guest adsorption/desorption based on infinite Co(NCS)2Py4 (Py=pyridine) system

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Summary

Thermogravimetry (TG) and Me2CO adsorption measurements for flexible porous crystalline coordination polymers with 2-dimensional (2-D) frameworks, {[Co(NCS)2(3-pia)2]·4Me2CO}n (1⊃4Me2CO, 3-pia=N-(3-pyridyl)isonicotinamide), were carried out. Taking advantages of capability of hydrogen bonding of amide groups for a dynamic properties, 1⊃4Me2CO show crystal (non-porous)-to-crystal (porous) structural rearrangement in Me2CO adsorption/desorption processes. The activation energy for the Me2CO desorption process of 1⊃4Me2CO was obtained using Flynn-Wall-Ozawa’s (FWO) method. The Me2CO adsorption isotherms on 1 have a threshold pressure (Pth) for abrupt accommodation of Me2CO molecules, which is regarded as the equilibrium pressure for the inclusion reaction of Me2CO

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Authors and Affiliations

  1. Department of Chemistry, School of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555, Japan

    K. Uemura

  2. Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan

    S. Kitagawa

  3. Department of Chemistry, Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571 Japan

    K. Saito

  4. Department of Chemistry, School of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555, Japan

    K. Fukui

  5. Department of Chemistry, School of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555, Japan

    K. Matsumoto

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  1. K. Uemura
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  2. S. Kitagawa
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  3. K. Saito
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  4. K. Fukui
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  5. K. Matsumoto
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Uemura, K., Kitagawa, S., Saito, K. et al. Thermodynamic aspect of reversible structural conversion induced by guest adsorption/desorption based on infinite Co(NCS)2Py4 (Py=pyridine) system. J Therm Anal Calorim 81, 529–532 (2005). https://doi.org/10.1007/s10973-005-0816-1

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  • DOI: https://doi.org/10.1007/s10973-005-0816-1

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