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On the Position of the Nitrogen 2p Energy Level in Endohedral N@C 60 (Ih) Научная публикация

Журнал Journal of Molecular Structure: THEOCHEM
ISSN: 0166-1280
Вых. Данные Год: 2005, Том: 727, Номер: 1-3 SPEC. ISS., Страницы: 149-157 Страниц : 9 DOI: 10.1016/j.theochem.2005.02.031
Ключевые слова DFT, Ionization potential, Koopmans' theorem, N@C60, ROHF, UHF
Авторы Plakhutin Boris N. 1 , Breslavskaya Natalia N. 2 , Gorelik Elena V. 3 , Arbuznikov Alexei V. 1,4
Организации
1 Laboratory of Quantum Chemistry, Boreskov Institute of Catalysis, Russian Academy of Sciences
2 Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences
3 International Tomography Center, Russian Academy of Sciences
4 Institute of Inorganic Chemistry, University of Wuerzburg

Информация о финансировании (4)

1 Российский фонд фундаментальных исследований 03-03-32169
2 Президиум РАН
3 Региональный общественный Фонд содействия отечественной науке
4 Совет по грантам Президента Российской Федерации НШ-2298.2003.3

Реферат: We present results of non-empirical ROHF, UHF, and DFT calculations of endohedral N@C60 (Ih) and of its constituents, C60 (Ih) and the free N atom, in their neutral and charged forms. Based on these results, a detailed discussion is presented on the position of the nitrogen 2p energy level in N@C60. The main purpose of this work is to reveal the source of essential discrepancies in previous ROHF and DFT calculations on N@C60 (Ih). We first demonstrate the limited validity of the Koopmans' theorem exploited in previous works. It is shown that the one-electron energies in N@C60 derived at the same ROHF/6-31G* level with different quantum chemical programs (Gamess, gaussian 98, Monstergauss, Turbomole) are not constant and vary over wide limits. The value of the ionization potential from the 2p level of the encapsulated N atom was estimated in the present work by both a ΔSCF method and the Koopmans' theorem and was compared with previously reported values. We also show that ROHF and DFT methods give in fact the very similar results for N@C60 (i.e. the same ground electronic configuration and the same localization of the spin density) and discuss the known opposing conclusion on this point.
Библиографическая ссылка: Plakhutin B.N. , Breslavskaya N.N. , Gorelik E.V. , Arbuznikov A.V.
On the Position of the Nitrogen 2p Energy Level in Endohedral N@C 60 (Ih)
Journal of Molecular Structure: THEOCHEM. 2005. V.727. N1-3 SPEC. ISS.. P.149-157. DOI: 10.1016/j.theochem.2005.02.031 WOS Scopus РИНЦ CAPlusCA OpenAlex
Даты:
Поступила в редакцию: 6 дек. 2004 г.
Принята к публикации: 18 янв. 2005 г.
Опубликована online: 28 июн. 2005 г.
Опубликована в печати: 16 авг. 2005 г.
Идентификаторы БД:
Web of science: WOS:000231584900022
Scopus: 2-s2.0-23644442376
РИНЦ: 41807684
Chemical Abstracts: 2005:824070
Chemical Abstracts (print): 144:114772
OpenAlex: W1981612762
Цитирование в БД:
БД Цитирований
Web of science 23
Scopus 26
РИНЦ 27
OpenAlex 25
Альметрики: