World Journal of Chemical Education
ISSN (Print): 2375-1665 ISSN (Online): 2375-1657 Website: http://www.sciepub.com/journal/wjce Editor-in-chief: Prof. V. Jagannadham
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World Journal of Chemical Education. 2020, 8(4), 155-162
DOI: 10.12691/wjce-8-4-3
Open AccessArticle

Comparison of Substituent Effects in Benzenes (XC5H5C), Pyridines (XC5H4N) and Phosphorines (XC5H4P) and their Protonated Species

R. Sanjeev1 and V. Jagannadham2,

1Department of Chemistry, Geethanjali College of Engineering and Technology Cheeryal-501301, Telangana, India

2Department of Chemistry, Osmania University, Hyderabad-500007, India

Pub. Date: September 27, 2020

Cite this paper:
R. Sanjeev and V. Jagannadham. Comparison of Substituent Effects in Benzenes (XC5H5C), Pyridines (XC5H4N) and Phosphorines (XC5H4P) and their Protonated Species. World Journal of Chemical Education. 2020; 8(4):155-162. doi: 10.12691/wjce-8-4-3

Abstract

Collection of interesting and stimulative data led us to construct Hammett plots for different properties like proton affinities, gas phase basicities, solvation free energies of free and protonated benzenes (I), pyridines (II) and phosphorines (III), and for pKa values of protonated pyridines and phosphorines. Trends in Hammett reaction constants (ρ) for all these processes were discussed.

Keywords:
benzenes pyridines phosphorines pKa proton affinities gas phase basicities solvation free energies

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