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231223s2007 xx ||||| 00| ||eng c |
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|a (DE-627)NLM168810913
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|a (NLM)17342722
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Li, Yongjian
|e verfasserin
|4 aut
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|a Theoretical study of the vertical excited states of benzene, pyrimidine, and pyrazine by the symmetry adapted cluster--configuration interaction method
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|c 2007
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|a Text
|b txt
|2 rdacontent
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|a ohne Hilfsmittel zu benutzen
|b n
|2 rdamedia
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|a Band
|b nc
|2 rdacarrier
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|a Date Completed 10.08.2007
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|a Date Revised 21.11.2013
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|a published: Print
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|a Citation Status MEDLINE
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|a (c) 2007 Wiley Periodicals, Inc.
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|a The ground state and the excited states of benzene, pyrimidine, and pyrazine have been examined by using the symmetry adapted cluster-configuration interaction (SAC-CI) method. Detailed characterizations and the structures of the absorption peaks in the vacuum ultraviolet (VUV), low energy electron impact (LEEI), and electron energy loss (EEL) spectra were theoretically clarified by calculating the excitation energy and the oscillator strength for each excited state. We show that SAC-CI has the power to well reproduce the electronic excitation spectra (VUV, LEEI, and EEL) simultaneously to an accuracy for both the singlet and the triplet excited states originated from the low-lying pi --> pi*, n --> pi*, pi --> sigma* and n --> sigma* excited states of the titled compounds. The present results are compared with those of the previous theoretical studies by methods, such as EOM-CCSD(T), STEOM-CCSD, CASPT2 and TD-B3LYP, etc
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Pyrazines
|2 NLM
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| 650 |
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|a Pyrimidines
|2 NLM
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| 650 |
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|a Benzene
|2 NLM
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| 650 |
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|a J64922108F
|2 NLM
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| 650 |
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|a pyrimidine
|2 NLM
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| 650 |
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|a K8CXK5Q32L
|2 NLM
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1 |
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|a Wan, Jian
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Xu, Xin
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of computational chemistry
|d 1984
|g 28(2007), 10 vom: 30. Juli, Seite 1658-67
|w (DE-627)NLM098138448
|x 1096-987X
|7 nnns
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| 773 |
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|g volume:28
|g year:2007
|g number:10
|g day:30
|g month:07
|g pages:1658-67
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|d 28
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