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- W1658153101 abstract "Ground and excited electronic states of neutral, cationic and anionic germanium and tin hexamers (Ge6 and Sn6) are investigated. Different geometries such as tetragonal bipyramid (D4h,D2h) and edge-caped trigonal bipyramid (C2v) (ECTBP) were studied. We have employed a number of high level electron correlation techniques such as large scale multireference singles+doubles configuration interaction (MRSDCI) computations that included up to 16 million configurations, complete active-space multiconfiguration self-consistent filed (CAS-MCSCF), and Møller-Plesset (MP2) techniques to investigate the low-lying electronic states, their geometries and energy separations. A 1A1g tetragonal bipyramid structure (D4h symmetry) is found as the ground state for both Ge6 and Sn6, in accord with the previously suggested experimental assignments. The excitation energies, atomization energies, ionization potentials and vertical and adiabatic electron affinities are computed and compared with the experimental results. Our computations of the excited states of these species have facilitated assignment of the anion photodetachment spectra of the anions of these clusters and comparison with the photoionization spectra of the neutral species." @default.
- W1658153101 created "2016-06-24" @default.
- W1658153101 creator A5021086726 @default.
- W1658153101 creator A5062949053 @default.
- W1658153101 date "2001-08-15" @default.
- W1658153101 modified "2023-09-26" @default.
- W1658153101 title "Geometries and spectroscopic properties of germanium and tin hexamers (Ge6, Ge6+, Ge6−, Sn6, Sn6+, and Sn6−)" @default.
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- W1658153101 doi "https://doi.org/10.1063/1.1386795" @default.
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