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Volumn 27, Issue 24, 2008, Pages 6440-6445

Transition state energy decomposition study of Acetate-Assisted and internal electrophilic substitution C-H Bond activation by (acac-O,O) 2Ir(X) complexes (X = CH 3COO, OH)

Author keywords

[No Author keywords available]

Indexed keywords

BASE COMPONENTS; C-H BOND ACTIVATIONS; C-H BONDS; CHARGE-TRANSFER; DISTORTION ENERGIES; ELECTROPHILIC SUBSTITUTIONS; ENERGY DECOMPOSITIONS; INTERACTION ENERGIES; LOCALIZED MOLECULAR ORBITALS; POLARIZATION EFFECTS; TRANSITION STATE; TRANSITION STATE ENERGIES; TRANSITION STATE GEOMETRIES; TRANSITION STATE STABILIZATIONS;

EID: 61849113862     PISSN: 02767333     EISSN: None     Source Type: Journal    
DOI: 10.1021/om8006568     Document Type: Article
Times cited : (60)

References (66)
  • 1
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    • (a) Bergman, R. G. Nature 2007, 446, 391.
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    • Bergman, R.G.1
  • 20
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    • Lam, W. H.; Jia, G.; Lin, Z.; Lau, C. P.; Eisenstein, O. Chem.-Eur. J. 2003, 9, 2775. In these references, OHM transition states have been referred to as metal-assisted σ-bond metathesis, oxidatively added transition state, and σ-complex assisted metathesis. For a recent review see:
    • (e) Lam, W. H.; Jia, G.; Lin, Z.; Lau, C. P.; Eisenstein, O. Chem.-Eur. J. 2003, 9, 2775. In these references, OHM transition states have been referred to as metal-assisted σ-bond metathesis, oxidatively added transition state, and σ-complex assisted metathesis. For a recent review see:
  • 46
    • 0034683363 scopus 로고    scopus 로고
    • 2 C-H bond orbital of benzene interacting with an empty dσ orbital and a polarized acetate lone pair interacting with the C-H σ* orbital.
    • 2 C-H bond orbital of benzene interacting with an empty dσ orbital and a polarized acetate lone pair interacting with the C-H σ* orbital.
  • 47
    • 61849156863 scopus 로고    scopus 로고
    • Jaguar, version 7.0; Schrodinger, LLC: New York, 2007. Gas phase thermodynamic corrections at 298 K were used. Model acac groups were used in all calculations
    • Jaguar, version 7.0; Schrodinger, LLC: New York, 2007. Gas phase thermodynamic corrections at 298 K were used. Model acac groups were used in all calculations.
  • 48
    • 61849143322 scopus 로고    scopus 로고
    • The imaginary vibrational frequencies for 2TS-Benzene are -88.6v and -4.0v. The imaginary vibrational frequencies for 2TS-Methane are -127.8v and-10.5v. The second negative force constant could not be eliminated and corresponds to acetate methyl group rotation.
    • The imaginary vibrational frequencies for 2TS-Benzene are -88.6v and -4.0v. The imaginary vibrational frequencies for 2TS-Methane are -127.8v and-10.5v. The second negative force constant could not be eliminated and corresponds to acetate methyl group rotation.
  • 49
    • 61849114669 scopus 로고    scopus 로고
    • Methane H/D exchange has not been observed experimentally for this system
    • Methane H/D exchange has not been observed experimentally for this system.
  • 51
    • 67549083548 scopus 로고    scopus 로고
    • Q-Chem, Inc, Pittsburgh, PA, See Supporting information for full reference
    • (a) Shao, Y.; et al. Q-Chem 3.1; Q-Chem, Inc.: Pittsburgh, PA, 2007. See Supporting information for full reference,
    • (2007) Q-Chem 3.1
    • Shao, Y.1
  • 61
    • 61849099977 scopus 로고    scopus 로고
    • In this type of analysis, the interaction energy can be obtained by taking the difference between the distortion energy and the activation energy. This interaction energy differs from the ALMO interaction energy due to basis set superposition and is not partitioned into physical terms
    • In this type of analysis, the interaction energy can be obtained by taking the difference between the distortion energy and the activation energy. This interaction energy differs from the ALMO interaction energy due to basis set superposition and is not partitioned into physical terms.
  • 62
    • 84868897036 scopus 로고    scopus 로고
    • 2 like coordination in 6M-TS-Benzene and 6M-TS-Methane prefer equal C-O bond lengths.
    • 2 like coordination in 6M-TS-Benzene and 6M-TS-Methane prefer equal C-O bond lengths.
  • 63
    • 32144438652 scopus 로고    scopus 로고
    • The geminal C-H bond repulsion model is useful for methane but probably not larger alkanes, see: a
    • The geminal C-H bond repulsion model is useful for methane but probably not larger alkanes, see: (a) Gronert, S. J. Org. Chem. 2006, 71, 1209.
    • (2006) J. Org. Chem , vol.71 , pp. 1209
    • Gronert, S.1
  • 66
    • 33750267418 scopus 로고    scopus 로고
    • The benzene C-H bond dissociation energy is ∼ 10 kcal/mol larger than methane. For discussion on this topic see: Thompson, M. E.; Baxter, S. M.; Bulls, A. R.; Burger, B. J.; Nolan, M. C.; Santarsiero, B. D.; Schaefer, W. P.; Bercaw, J. E. J. Am. Chem. Soc. 1987, 109, 203, and references therein.
    • The benzene C-H bond dissociation energy is ∼ 10 kcal/mol larger than methane. For discussion on this topic see: Thompson, M. E.; Baxter, S. M.; Bulls, A. R.; Burger, B. J.; Nolan, M. C.; Santarsiero, B. D.; Schaefer, W. P.; Bercaw, J. E. J. Am. Chem. Soc. 1987, 109, 203, and references therein.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.