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Volumn 110, Issue 14, 2006, Pages 4810-4816

Nonclassical carbocations as C-H hydrogen bond donors

Author keywords

[No Author keywords available]

Indexed keywords

GAS PHASE; NONCLASSICAL CATIONS; TERPENOID SYNTHESIS;

EID: 33646351072     PISSN: 10895639     EISSN: None     Source Type: Journal    
DOI: 10.1021/jp056965s     Document Type: Article
Times cited : (43)

References (124)
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    • By constraining one H-C-C angle to 113° to prevent bridging and the H-C-C-H dihedral angles for the other two H's of the methyl group (fixed to +123 and -123°) and then allowing all of the other degrees of freedom of 1 to relax, we arrived at a structure resembling a classical (nonbridging) ethyl cation; this constrained structure was ∼4 kcal/mol higher in energy than 1.
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    • and references therein
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    • Protonated cyclopropanes have also been proposed as intermediates in the biosynthesis of cyclopropane fatty acids. See, for example, Iwig, D. F.; Grippe, A. T.; McIntyre, T. A.; Booker, S. J. Biochemistry 2004, 43, 13510-13524.
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    • note
    • Computed interaction energies, based on single point calculations in solvent, for (b-d): in benzene, -5.83, -3.96, and -5.87 kcal/mol; in nitromethane, -2.84, -1.26, and -3.68 kcal/mol; and in water, +1.23, + 1.64, and -0.66 kcal/mol.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.