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Relativistic EOM-CCSD for core-excited and core-ionized state energies based on the 4-component Dirac-Coulomb(-Gaunt) Hamiltonian
Journal of Chemical Theory and Computation, American Chemical Society, 04-05-2021, 17; 6, 3583-3598Compte-rendu et recension critique d'ouvragetexte intégral -
Electronic states of (ultra) heavy halogen species with four-component based equation of motion coupled cluster methods
MESM2018 Molecular Electronic Structure, Metz, 28-08-2018, 28-08-2018 -
Exploration of excited, electron attachment and detachment states of (ultra)heavy halogen species with relativistic 4-component EOM-CC methods
12th International Conference on Relativistic Effects in Heavy-Element Chemistry and Physics, Marburg, 02-09-2017, 02-09-2017 -
Relativistic Coupled Cluster theory for the Calculation of Ground and Excited State Energies and Molecular Properties
19th DIRAC Working Group Meeting 2016, Odensee, 29-05-2016, 30-05-2016 -
Exploration of the Core Valence Separation approximation to obtain the ionization potentials of the core electrons by the EOM-CCSD method according to a 4-component relativistic approach
Première réunion générale du GDR NBODY : Problème Quantique à N Corps en Chimie et Physique, Lille, 08-01-2020, 08-01-2020Autre communication scientifique (congrès sans actes - poster - séminaire...) -
Development of Theoretical Tools for Modeling Core and Valence Spectroscopies and their Applications to Species of Atmospheric Interest
JTMS 2020 : Journées "Théorie, Modélisation et Simulation", Visioconférence, 02-11-2020, 02-11-2020Autre communication scientifique (congrès sans actes - poster - séminaire...) -
Predictive simulations of ionization energies of solvated halide ions with relativistic embedded Equation of Motion Coupled-Cluster Theory
Physical Review Letters, American Physical Society, 28-12-2018, 121, 266001Compte-rendu et recension critique d'ouvragetexte intégral -
Exploring the dynamic and thermodynamic properties of halides through molecular dynamics simulations
257th American Chemical Society National Meeting, Orlando, 31-01-2019, 31-03-2019 -
Methods based on the coupled cluster ansatz and employing four-component Hamiltonians are particularly appealing in treating the electronic structure of molecules containing heavy centers, due to their ecient treatment of electron correlation and spin-orbit coupling (SOC) [1] on the same footing, up to and including the superheavy elements, as well as to serve as benchmark to more approximate relativistic Hamiltonians, notably those where SOC is treated more approximately (see for instance [2] and references therein).In this contribution we discuss our recent implementation [3] in the Dirac program [4] of the equation of motion coupled cluster method for excitation energies (EOM-EE-CCSD), single electron attachment (EOM-EA-CCSD) and single electron detachment (EOM-IPCCSD). We showcase the method by addressing the determination of the low-lying statesof oxide radicals of group 17 elements (XO, X = Cl, Br, I, At, Ts), the excited and ionized states of the PuO<sub>2</sub> molecule in the gas phase [5], as well as the ionization energies of halide ions in water droplets [6]. In the latter case, we use the frozen density embedding approach to combine EOM-IP-CCSD (for the halogens) and the SAOP model potential (for the water molecules) to determine the ionization energies for the complete halide droplet system, while sampling different nuclear configurations with snapshots obtained from classical molecular dynamics simulations with polarizable force fields [7].This work has been supported by the French national agency for research, contract ANR-11-LABX-0005 chemical and physical properties of the atmosphere (CaPPA).<b>References</b>1. T. Fleig, Chem. Phys., 2 (2012) 395 ; T. Saue, ChemPhysChem, 12 (2011) 30772. E. Epifanovsky et al, J. Phys. Chem., 143 (2015) 064102 ; Z. Cao, Z. Li, F. Wang,W. Liu, Phys. Chem. Chem. Phys., 19 (2017) 3713 ; L. Cheng, F. Wang, J. F. Stanton,J. Gauss, J. Phys. Chem., 148 (2018) 0441083. A. Shee, T. Saue, L. Visscher, A. S. P. Gomes, J. Phys. Chem., 149 (2018) 1741134. http://diracprogram.org5. S. Kervazo, F. Real, F. Virot, A. S. P. Gomes, V. Vallet arXiv:1906.03157 (2019)6. Y. Bouchafra, A. Shee, F. Real, V. Vallet, A. S. P. Gomes Phys. Rev. Lett., 121 (2018)2660017. F. Real et al, J. Chem. Phys., 144, (2016) 124513
ISTCP 2019 - 10th Triennial Congress of the International Society for Theoretical Chemical Physics, Tromsø, 11-07-2019, 11-07-2019 -
Predicting solvent effects on the photoelectron spectra of halide ions with WFT-in-DFT embedding
1res Journées Scientifiques du GDR 2035 SolvATE, Nancy, 16-05-2018, 16-05-2018