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X-ray observation of a transient hemiaminal trapped in a porous network

Author

Listed:
  • Takehide Kawamichi

    (School of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan)

  • Tsuyoshi Haneda

    (School of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan)

  • Masaki Kawano

    (School of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
    Present address: Division of Advanced Materials Science, Pohang University of Science and Technology, San 31 Hyojadong, Pohang 790-784, South Korea.)

  • Makoto Fujita

    (School of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
    Core Research for Evolutional Science and Technology, Japan Science and Technology Agency, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan)

Abstract

Chemical reactions X-rayed For the structural analysis of stable crystalline compounds, X-ray crystallography is the method of choice. But unstable reaction intermediates are beyond its capabilities. Kawamichi et al. have now cracked that problem by designing a robust porous network material that acts as a 'reaction medium', with the chemical transformations taking place within the pores. X-ray analysis can then be used to take 'snapshots' of different stages of the reaction. In a proof of principle experiment the structure of a porous network was determined first with an aromatic amine embedded in it, then after an aldehyde substrate was diffused into the material to form a hemiaminal intermediate and finally when the imine product had formed.

Suggested Citation

  • Takehide Kawamichi & Tsuyoshi Haneda & Masaki Kawano & Makoto Fujita, 2009. "X-ray observation of a transient hemiaminal trapped in a porous network," Nature, Nature, vol. 461(7264), pages 633-635, October.
    • Handle: RePEc:nat:nature:v:461:y:2009:i:7264:d:10.1038_nature08326
    DOI: 10.1038/nature08326
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    Cited by:

    1. Meng-Fan Wang & Yan Mi & Fei-Long Hu & Hajime Hirao & Zheng Niu & Pierre Braunstein & Jian-Ping Lang, 2022. "Controllable multiple-step configuration transformations in a thermal/photoinduced reaction," Nature Communications, Nature, vol. 13(1), pages 1-8, December.
    2. Yuki Wada & Pavel M. Usov & Bun Chan & Makoto Mukaida & Ken Ohmori & Yoshio Ando & Haruhiko Fuwa & Hiroyoshi Ohtsu & Masaki Kawano, 2024. "Atomic-resolution structure analysis inside an adaptable porous framework," Nature Communications, Nature, vol. 15(1), pages 1-8, December.

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