کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1410947 1501838 2010 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Computational evaluation of σI and σR substituent constants
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Computational evaluation of σI and σR substituent constants
چکیده انگلیسی

A computational approach for the evaluation of σI and σR substituent constants is outlined. It is based on correlations between theoretically evaluated electrostatic potential at nuclei (EPN) values for the carbon atoms (VC) in substituted benzene and bicyclo[2,2,2]octane derivatives containing the same polar group at position 1. Theoretical computations at B3LYP/6-311+G(2d,2p) level were performed. Quite satisfactory correlations linking σI and σR constants and quantities derived from the respective VC values in the two series of molecules were obtained. The obtained equations provide a simple and meaningful approach for theoretical evaluation of σI and σR constants. The method is applicable also to polysubstituted and polynuclear aromatic hydrocarbons.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Structure - Volume 976, Issues 1–3, 15 July 2010, Pages 427–430
نویسندگان
, , ,