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Issue 45, 2019
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Reply to the ‘Comment on “Penicillin's catalytic mechanism revealed by inelastic neutrons and quantum chemical theory”’ by S. A. Glover, Phys. Chem. Chem. Phys., 2019, 21, 18012

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Abstract

Herein we comparatively comment on the molecular metric ‘amidicity’, a descriptor of amide reactivity, and differing methods to determining it; with focus on lactam-rings. Specifically, our established amidicity percentage (AM%) approach is quantitatively contrasted with the transamidation (TA) method. This comment is organised into two sections, firstly addressing the differing methods in context of the computational bases of amidicity. This is followed by the quantitative demonstration that although both the AM% and HRS methods provide estimates of resonance enthalpy (ΔHRE), the former is more reliable across a wider set of systems. The robustness of the AM% approach is affirmed by quantitative matching of experimental NMR and kinetics measurements tracking changes in amide reactivities, including in Penicillin arising from modulation of its amide group and environmental effects.

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Article information


Submitted
09 Jan 2019
Accepted
17 Sep 2019
First published
19 Sep 2019

Phys. Chem. Chem. Phys., 2019,21, 25513-25517
Article type
Comment

Reply to the ‘Comment on “Penicillin's catalytic mechanism revealed by inelastic neutrons and quantum chemical theory”’ by S. A. Glover, Phys. Chem. Chem. Phys., 2019, 21, 18012

Z. Mucsi, G. A. Chass and I. G. Csizmadia, Phys. Chem. Chem. Phys., 2019, 21, 25513
DOI: 10.1039/C9CP00152B

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