메뉴 건너뛰기




Volumn 4, Issue 5, 2003, Pages 522-525

How diradicaloid is a stable diradical?

Author keywords

Ab initio calculations; Density functional calculations; Diradicals; Occupation numbers; Orbital interactions

Indexed keywords

CALCULATIONS; DENSITY FUNCTIONAL THEORY; SYNTHESIS (CHEMICAL);

EID: 0037568313     PISSN: 14394235     EISSN: None     Source Type: Journal    
DOI: 10.1002/cphc.200200668     Document Type: Article
Times cited : (97)

References (40)
  • 1
    • 0003396304 scopus 로고    scopus 로고
    • (Ed. P. von R. Schleyer) Wiley-Inter science, New York
    • (a) W. T. Borden, Encyclopedia of Computational Chemistry (Ed. P. von R. Schleyer), Wiley-Interscience, New York, 1998, pp. 708-722;
    • (1998) Encyclopedia of Computational Chemistry , pp. 708-722
    • Borden, W.T.1
  • 4
  • 5
    • 0000246235 scopus 로고    scopus 로고
    • e) A. H. Zewail, Angew. Chem. 2002, 112, 2688-2738; Angew. Chem. Int. Ed. 2000, 29, 2587-2631.
    • (2002) Angew. Chem. , vol.112 , pp. 2688-2738
    • Zewail, A.H.1
  • 6
    • 0038783451 scopus 로고    scopus 로고
    • e) A. H. Zewail, Angew. Chem. 2002, 112, 2688-2738; Angew. Chem. Int. Ed. 2000, 29, 2587-2631.
    • (2000) Angew. Chem. Int. Ed. , vol.29 , pp. 2587-2631
  • 15
    • 0023315713 scopus 로고
    • (c) V. Bonacic-Koutecký, J. Koutecký, J. Michl, Angew. Chem. 1987, 99, 216-235; Angew. Chem. Int. Ed. EngL 1987, 26, 170-189;
    • (1987) Angew. Chem. Int. Ed. Engl. , vol.26 , pp. 170-189
  • 18
    • 0038783404 scopus 로고    scopus 로고
    • (a) M. Seierstad, C. R. Kinsinger, C. J. Cramer, Angew. Chem. 2002, 114, 4050-4052; Angew, Chem. Int. Ed. 2002, 41, 3894-3896.
    • (2002) Angew, Chem. Int. Ed. , vol.41 , pp. 3894-3896
  • 20
    • 0012355539 scopus 로고    scopus 로고
    • (b) H. Grutzmacher, F. Breher, Angew. Chem. 2002, 114, 4178-4184; Angew. Chem. Int. Ed. 2002, 41, 4006-4011.
    • (2002) Angew. Chem. , vol.114 , pp. 4178-4184
    • Grutzmacher, H.1    Breher, F.2
  • 21
    • 0037021045 scopus 로고    scopus 로고
    • (b) H. Grutzmacher, F. Breher, Angew. Chem. 2002, 114, 4178-4184; Angew. Chem. Int. Ed. 2002, 41, 4006-4011.
    • (2002) Angew. Chem. Int. Ed. , vol.41 , pp. 4006-4011
  • 22
    • 0000615459 scopus 로고
    • K. A. Nguyen, M. S. Gordon, J. A. Boatz, J. Am. Chem. Soc. 1994, 116, 9241-9249. 2a is a transition structure on a singlet potential energy surface with a triplet ground state.
    • (1994) J. Am. Chem. Soc. , vol.116 , pp. 9241-9249
    • Nguyen, K.A.1    Gordon, M.S.2    Boatz, J.A.3
  • 36
    • 0037768846 scopus 로고    scopus 로고
    • note
    • -1.
  • 37
    • 0037768844 scopus 로고    scopus 로고
    • note
    • While perfect pairing (PP) orbitals are the simplest qualitatively correct orbitals that can be uniquely defined for a pair of bonding and antibonding orbitals, particularly for diradicaloid systems, associating orbital energies with PP orbitals appear to be somewhat inconsistent. This is because PP orbitals are part of the two-electron pair function in PP theory, whereas the Fock operator used to obtain orbital energies is a one-particle operator. We avoided this difficulty by choosing to use DFT calculations at the RB3LYP/6-31G level, in which orbital energies are well defined with the Kohn - Sham orbitals and the Fock operator, for estimating orbital energies.
  • 38
    • 0038783398 scopus 로고    scopus 로고
    • note
    • old). In Figure 2, 2.99 eV is the gap between this weak π bond and its correlating virtual antibond.
  • 39
    • 0038106397 scopus 로고    scopus 로고
    • note
    • 2 group) in it, and thus is inappropriate for unperturbed orbital energies.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.