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Int. J. Mol. Sci. 2005, 6(1), 18-29; doi:10.3390/i6010018

Re-examination of Steric Substituent Constants by Molecular Mechanics

1
Department of Materials Science and Chemical Engineering, Faculty of Engineering, Yokohama National University, Hodogaya-ku, Yokohama 240-8501, Japan
2
Kanagawa High-Technology Foundation, KSP Bldg. E-201, Kawasaki 213-0012, Japan
*
Author to whom correspondence should be addressed.
Received: 1 July 2004 / Revised: 10 September 2004 / Accepted: 12 October 2004 / Published: 31 January 2005
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Abstract

Statistical analysis employing the set of the steric constants Ωj,k(Rc) is shown to be very effective in characterizing the substituent steric effect on organic reactions. Ωj,k(Rc) contains several variable parameters which are useful for the diagnosis of the character of steric effect. The parameters controlling the angular, or directional, weight (j,k) and the size of reaction center atom X(Rc) are varied in order to elucidate the characteristics of several steric substituent constants. View Full-Text
Keywords: Steric effect; Steric hindrance; Molecular mechanics; Steric substituent constant; Es; υ; S; Ω s Steric effect; Steric hindrance; Molecular mechanics; Steric substituent constant; Es; υ; S; Ω s
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Hirota, M.; Sakakibara, K.; Yuzuri, T.; Kuroda, S.-I. Re-examination of Steric Substituent Constants by Molecular Mechanics. Int. J. Mol. Sci. 2005, 6, 18-29.

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