Updated May 2, 2021

;to be revised frequently

Author: Motohiro NISHIO

Established on April 1999

Image of CH/π interaction

Welcome to my site

Yokoso, Bienvenu, Willkommen, Benvenuti

This is a forum of everybody who is interested in the weak intermolecular forces. The author wishes to introduce the important roles of the CH/π hydrogen bond in chemistry and biology. He will be glad if you join us in the discussion. Please visit the database and visitor's page, and give your opinion, comments, and information.

What's new

May 2, 2021
On Database, new items are added in categories of MEDICAL CHEMISTRY, PROTEIN and THEORY.
Mar. 20, 2021
On CH/π page, related papers were listed for explaing details of the CH/π hydrogen bond theory.
Sep. 21, 2020
On Database, new items were added in categories of CHROMATOGRAPHY, PROTEIN and THEORY and a new catogory page "Reviews" has been added.
Aug. 30, 2020
Email address of the author was added (see "Author" page)


  • What is it?
    Summary of the CH/π hydrogen bond

  • The list of the papers and the reviews which are associated with the author

  • Recommended books which are related with the CH/π hydrogen bond

  • List of papers related to the CH/pi hydrogen bond; selected papers related to the XH/π and CH/n hydrogen bonds

  • About the author of this web site

Information, advice, and encouragement from the following scientists are gratefully acknowledged.

H.-J. Schneider (Saarbrucken), H. Sigel (Basel), F.-G. Klaerner (Essen), A. Schmidt (Stuttgart), F. Diederich (Zurich), C. Roussel, L. Stella (Marseille), E. N. Jacobsen (Boston), L. Sweeting (Baltimore), J. Steed (London), E. Dalcanale (Parma), S. Kondo (Tokyo), Y. Umezawa (Tokyo), Y. Takeuchi (Meiji Seika), T. Yuzuri (Yokohama), Y. Kohno (Yokohama), H. Masuda (Nagoya), P. Chakrabarti (Calcutta), G. M. Caciuffo (Ancona), K. Kuchitsu (Tokyo), T. Yoshida (Yokohama), T. Steiner (Berlin), H.-K. Fun (Penang), K. Kobayashi (RIKEN), A. Piccolo (Napoli), H. Takahashi (Kyoto), M. Iwaoka (Tokyo), Kyoko Ueno (Tokyo), H. Suezawa, S. Ishihara (Yokohama), V. Spiwok (Prague), O. Takahashi (Higashi Hiroshima)

Thanks of the author are also due to Takako Nishio, Jun and Chie Suzuki for their cooperation.