Abstract
We present a critical discussion related to the recent definition of the intrinsic reactivity index, IRI, (Tetrahedron Lett. 2013, 54, 339-342; Tetrahedron 2013, 69, 4247-4258) formulated to describe both, electrophilicity (charge acceptance) and nucleophilicity (charge donation) reactivities. We here stress that such an IRI model, based on the quantity μ/η, should be properly related to theoretical approximations associated to the change in the global electronic energy of a given chemical system under interaction with a suitable electron bath (Gazquez JL et al. J Phys Chem A 2007, 111, 1966-1970). Further, the limitations of the IRI model are presented by emphasizing that the intrinsic relative scales of electrophilicity and nucleophilicity within a second-order perturbation approach must account for the further stabilization of the two interacting species (Chamorro E et al. J Phys Chem A 2013, 117, 2636-2643).
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Acknowledgments
We acknowledge the continuous support received from FONDECYT-Chile through Project No. 1140343 (EC). EC also thanks the Universidad Andres Bello (UNAB) for research grant No. DI-219-12/N (Núcleo CIMFQ), and to the Millennium Science Initiative (ICM, Chile) for the support through the Millennium Nucleus Chemical Process and Catalysis (CPC), project NC120082.
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Chamorro, E., Melin, J. On the intrinsic reactivity index for electrophilicity/nucleophilicity responses. J Mol Model 21, 53 (2015). https://doi.org/10.1007/s00894-015-2608-2
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DOI: https://doi.org/10.1007/s00894-015-2608-2