Unraveling a Trifecta of Weak non-Covalent Interactions: The Dissociation Energy of the Anisole-Ammonia 1:1 Complex

Authors

John L. Loman, Marquette University
James T. Makuvaza, Marquette UniversityFollow
Damian L. Kokkin, Marquette UniversityFollow
Scott A. Reid, Marquette UniversityFollow

Document Type

Article

Publication Date

1-2021

Publisher

Elsevier

Source Publication

Chemical Physics Letters

Source ISSN

0009-2614

Abstract

The anisole-ammonia 1:1 complex is a challenge for both experiment and theory. Early studies supported a non-planar structure, involving a trifecta of weak non-covalent interactions: N-H/O, N-H/π, and C-H/N. The calculated structure and binding energy of the complex proved remarkably sensitive to the level of theory employed. Here, we report the first experimental measurement of the ground state dissociation energy of the complex, and derive an excited (S₁) state dissociation energy that is in excellent agreement with the cutoff observed in the experimental excitation spectrum. Results are compared with previous predictions and new calculations based on benchmarked Density Functional Theory methods.

Comments

Accepted version. Chemical Physics Letters, Vol. 762 (January 2021): 138106. DOI. © 2021 Elsevier. Used with permission.

Recommended Citation

Loman, John L.; Makuvaza, James T.; Kokkin, Damian L.; and Reid, Scott A., "Unraveling a Trifecta of Weak non-Covalent Interactions: The Dissociation Energy of the Anisole-Ammonia 1:1 Complex" (2021). Chemistry Faculty Research and Publications. 1037.
https://epublications.marquette.edu/chem_fac/1037