@Article{RagniBitPruBarPos:2016:I.PoEn,
author = "Ragni, Mirco and Bitencourt, Ana Carla P. and Prudente, Frederico
V. and Barreto, Patr{\'{\i}}cia Regina Pereira and Posati,
Tamara",
affiliation = "{Universidade Estadual de Feira de Santana} and {Universidade
Estadual de Feira de Santana} and {Universidade Federal da Bahia
(UFBA)} and {Instituto Nacional de Pesquisas Espaciais (INPE)} and
{Consiglio Nazionale Delle Ricerche}",
title = "Umbrella motion of the methyl cation, radical, and anion
molecules: I. potentials, energy levels and partition functions",
journal = "European Physical Journal D",
year = "2016",
volume = "70",
number = "3",
pages = "1426",
month = "Mar.",
keywords = "Molecular Physics and Chemical Physics.",
abstract = "A study of the umbrella motion of the methyl cation, radical, and
anion molecules is presented. This is the floppiest mode of
vibration of all three species and its characterization is of
fundamental importance for understanding their reactivity. Minimum
Energy Paths of the umbrella motions according to the
hyperspherical treatment were obtained, by single point
calculations, at the CCSD(T)/aug-cc-pVQT level of theory in the
Born-Oppenheimer approximation. These energy profiles permit us to
calculate the vibrational levels through the Hyperquantization
algorithm, which is shown appropriated for the description of the
umbrella motion of these three molecules. The adiabatic electron
affinity and ionization potentials were estimated to good
accuracy. Partition functions are also calculated in order to
obtain information on the reaction rates involving these groups.",
doi = "10.1140/epjd/e2016-60530-2",
url = "http://dx.doi.org/10.1140/epjd/e2016-60530-2",
issn = "1434-6060",
language = "en",
targetfile = "ragni_umbrella2.pdf",
urlaccessdate = "27 abr. 2024"
}