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Electron-spin multiplicities and molecular structures of neutral and ionic scandium-benzene complexes.

Author
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
Journal
:
The Journal of chemical physics
Volume
:
123
Issue
:
21
Number of Pages
:
214306
Date Published
:
2005
ISSN Number
:
0021-9606
URL
:
https://doi.org/10.1063/1.2131867
DOI
:
10.1063/1.2131867
Short Title
:
J Chem Phys
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