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Volumn 129, Issue 47, 2007, Pages 14767-14774

Boron rings enclosing planar hypercoordinate group 14 elements

Author keywords

[No Author keywords available]

Indexed keywords

BORON; CHEMICAL SHIFT; ELECTRONIC STRUCTURE; MAGNETIC FIELD EFFECTS; MOLECULAR MODELING; MOLECULAR ORBITALS;

EID: 36749061280     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja074956m     Document Type: Article
Times cited : (128)

References (91)
  • 4
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    • Keese, R. Chem. Rev. 2006, 106, 4787.
    • (2006) Chem. Rev , vol.106 , pp. 4787
    • Keese, R.1
  • 31
  • 62
    • 0038626673 scopus 로고    scopus 로고
    • Gaussian, Inc, Pittsburgh
    • Frisch, G. W.; et al. Gaussian 03; Gaussian, Inc.: Pittsburgh, 2003.
    • (2003) Gaussian 03
    • Frisch, G.W.1
  • 86
    • 0035928162 scopus 로고    scopus 로고
    • The reference covalent bond distances are as follows: CH 3BH2 (Cs, 1.554; SiH3BH 2 (Cs, 2.017; GeH3BH2 (Cs, 2.066; SnH3BH2 (C s, 2.258; PbH3-BH2 (Cs, 2.304; B2H4 (D2d, 1.629; B 2H2 D8h, 1.507 Å. CH 3BH2, SiH3-BH2, GeH 3BH2, B2H4, and B2H 2 geometries are optimized at B3LYP/6-311++G** level, and SnH3BH2 and PbH3BH2 geometries were optimized at B3LYP/def2-TZVPP level. For additional covalent bond distance reference, see Suresh, C. H, Koga, N. J. Phys. Chem. A 2001, 105, 5940
    • 2 geometries were optimized at B3LYP/def2-TZVPP level. For additional covalent bond distance reference, see Suresh, C. H.; Koga, N. J. Phys. Chem. A 2001, 105, 5940.
  • 87
    • 36749083965 scopus 로고    scopus 로고
    • When compared to a hypothetical model of D6h SnB 62- with short Sn-B distance (constrained to 1.8 Å, a highly unfavorable anti-bonding B-B interaction (b1u MO; see Figure 1-SI) are now reduced due to the long B-B distance in triplet D6h SnB62, Meanwhile, bonding e1g π MOs become less stable due to the increased B-B distance, resulting in the inversion of occupied (e 1g) and the unoccupied b1u, so that b1u MO is fully occupied, leaving degenerate e1g π MOs singly occupied. Hence, SnB 62- and, similarly, PbB62- are triplet ground states
    • 2- are triplet ground states.
  • 88
    • 36749085105 scopus 로고    scopus 로고
    • In SnB7, PbB7, and PbB 8, the anti-bonding a1 interaction is diminished as the central atom moves away from the Bn rings, whereas radial bonding e1 MO interactions become less stable, resulting in the inversion of a1 and e2 MOs see Figure 2-SI, Hence, a1 MO is fully occupied and e2 MOs are singly occupied in SnB7, PbB7, and PbB8
    • 8.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.