Electron-spin multiplicities and molecular structures of neutral and ionic scandium-benzene complexes.
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Abstract | :
Scandium-benzene complexes, Sc-(C6H6)1,2 are produced by interactions between the laser-vaporized scandium atoms and benzene vapor in pulsed molecular beams, and identified by photoionization time-of-flight mass spectrometry and photoionization efficiency spectroscopy. The electron-spin multiplicities and geometries of these complexes and their ions are determined by combining pulsed field-ionization zero electron kinetic-energy spectroscopy and density-functional theory calculations. For scandium-monobenzene, a short-range quartet ground state is determined for the neutral complex, and a low-energy triplet state is probed for the ion. For the dibenzene complex, the neutral ground state is a doublet, and two low-energy ion states are singlet and triplet. The quartet and triplet states of scandium-monobenzene and the triplet state of scandium-dibenzene possess sixfold symmetry, whereas the doublet and singlet of the dibenzene complex have twofold symmetry. Moreover, ionization energies and metal-ring stretching wavenumbers are measured for both complexes. |
Year of Publication | :
2005
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Journal | :
The Journal of chemical physics
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Volume | :
123
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Issue | :
21
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Number of Pages | :
214306
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Date Published | :
2005
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ISSN Number | :
0021-9606
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URL | :
https://doi.org/10.1063/1.2131867
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DOI | :
10.1063/1.2131867
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Short Title | :
J Chem Phys
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