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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