Journal
JOURNAL OF CHEMICAL PHYSICS
Volume 133, Issue 14, Pages -Publisher
AIP Publishing
DOI: 10.1063/1.3497189
Keywords
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Funding
- MEST/NRF [2009-0084918, 2010-0001632]
- Korea Institute of Science and Technology Information [KSC-2009-S02-0015]
- WCU
- Ministry of Education, Science & Technology (MoST), Republic of Korea [KIOST] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [2007-0054844, 2009-0084918] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Quantum chemical calculations of HgXn (X=F, Cl, Br, and I; n=1, 2, and 4) in the gas phase are performed using the density functional theory (DFT), two-component spin-orbit (SO) DFT, and high-level ab initio method with relativistic effective core potentials (RECPs). Molecular geometries, vibrational frequencies, and various thermochemical energies are calculated and compared with available experimental results. We assess the performances of DFT functionals for calculating various molecular properties. The PBE0 functional is generally reasonable for the molecular geometries and the vibrational frequencies, but the M06 functional is more appropriate for estimating thermochemical energies. Both shape-consistent and energy-consistent RECPs correctly describe the SO effect. (C) 2010 American Institute of Physics. [doi:10.1063/1.3497189]
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