pK_aH of the Two Conjugate Acids (CH₂N₅⁺) and (HN₆⁺) of Two Hypothetical Molecules the Pentazine (CHN₅) and the Hexazine (N₆) of Azabenzene Series: A Chemical Education Perspective

R. Sanjeev¹, R. Ravi², D. A. Padmavathi² and V. Jagannadham^2,

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

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

Cite this paper

R. Sanjeev, R. Ravi, D. A. Padmavathi and V. Jagannadham. pK_aH of the Two Conjugate Acids (CH₂N₅⁺) and (HN₆⁺) of Two Hypothetical Molecules the Pentazine (CHN₅) and the Hexazine (N₆) of Azabenzene Series: A Chemical Education Perspective. World Journal of Chemical Education. 2022; 10(3):105-109. doi: 10.12691/WJCE-10-3-3

Abstract

Extrapolation of a simple straight-line graph is used to calculate the pK_aH of two cations (CH₂N₅⁺) and (HN₆⁺) (eqn. 1 and 2) of two hypothetical molecules pentazine (CHN₅) and hexazine (N₆). This is achieved by simply an extrapolation of the locus of the plot of pK_aH of protonated pyridine, pyridazines, s-triazine and 1,2,4,5-tetrazine versus the number of nitrogen atoms of the cyclic azines. Even well matched pK_aH values for these two species were found from the extrapolation of the locus of the plot of pK_aH versus average ionization potential (I_v/eV) of the neutral azines. This article is useful in graduate research classroom to explain the acid-base properties and to determine the pK_aH values.

Keywords

pK_aH, azines

Copyright

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