Volume 22, Issue 8 pp. 835-845

Calculation of stacking geometries by a modified MM2 method

Mayumi Kamishima

Corresponding Author

Mayumi Kamishima

Department of Chemistry, Faculty of Science, Okayama University, Tsushima-naka 3-1-1, Okayama 700-8530, Japan

Department of Chemistry, Faculty of Science, Okayama University, Tsushima-naka 3-1-1, Okayama 700-8530, JapanSearch for more papers by this author
Masaaki Kojima

Masaaki Kojima

Department of Chemistry, Faculty of Science, Okayama University, Tsushima-naka 3-1-1, Okayama 700-8530, Japan

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Yuzo Yoshikawa

Yuzo Yoshikawa

Department of Chemistry, Faculty of Science, Okayama University, Tsushima-naka 3-1-1, Okayama 700-8530, Japan

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First published: 17 April 2001
Citations: 17

Abstract

The MM2 method has been modified using a three-center charge model aimed at determining stacking geometries. The stacking interactions for the benzene dimer, porphine dimer, and bis(4,5-diazafluoren-9-one thiosemicarbazonato)palladium(II) have been assessed with both the three-center charge model and the conventional single-center charge model using the MM2 method. The modified MM2 method always gave better results than the conventional method, and the obtained structures by the former method are in good agreement with the proposed structures from those theoretical and experimental results. The possible advantages of using the three-center charge model for complex systems are also discussed. © 2001 John Wiley & Sons, Inc. J Comput Chem 22: 835–845, 2001

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