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Modeling the Spectra of Heavy Elements in Condensed Phase Using WFT-in-DFT and DFT-in-DFT Embedding
48th Symposium on Theoretical Chemistry (STC 2012), Karlsruhe, 23-09-2012, 23-09-2012Autre communication scientifique (congrès sans actes - poster - séminaire...) -
Communication: Relativistic Fock-space coupled cluster study of small building blocks of larger uranium complexes
The Journal of Chemical Physics, American Institute of Physics, 07-2014, 141; 4Compte-rendu et recension critique d'ouvragetexte intégral -
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 -
Modeling the Spectra of Heavy Elements in Condensed Phase Using WFT-in-DFT and DFT-in-DFT Embedding
7th Molecular Quantum Mechanics, Lugano, 02-06-2013, 02-06-2013Autre communication scientifique (congrès sans actes - poster - séminaire...) -
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 -
Towards an efficient ab-initio description of environment effects: Solvatochromic shifts from coupled-cluster theory embedded in density-functional theory
48th Symposium on Theoretical Chemistry (STC 2012), Karlsruhe, 23-09-2012, 23-09-2012Autre communication scientifique (congrès sans actes - poster - séminaire...) -
Towards an efficient ab-initio description of environment effects: Solvatochromic shifts from coupled-cluster theory embedded in density-functional theory
7th Molecular Quantum Mechanics, Lugano, 02-06-2013, 02-06-2013Autre communication scientifique (congrès sans actes - poster - séminaire...) -
Towards an efficient ab-initio description of environment effects: Solvatochromic shifts from coupled-cluster theory embedded in density-functional theory
14th ICQC (International Conference of Quantum Chemistry), Boulder, 25-06-2012, 25-06-2012Autre communication scientifique (congrès sans actes - poster - séminaire...)