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Microwave spectroscopy and conformations of 2-methylbutane and 2,3-dimethylbutane

✍ Scribed by Geoffrey B. Churchill; James P. Dombrowski; Lu Ma; Kristin Swana; Robert K. Bohn; John A. Montgomery Jr.

Book ID
103838555
Publisher
Elsevier Science
Year
2010
Tongue
English
Weight
237 KB
Volume
978
Category
Article
ISSN
0022-2860

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✦ Synopsis

The microwave rotational spectrum of 2-methylbutane has been measured and assigned to two conformers with C s and C 1 symmetry. Similarly, the rotational spectrum of the C 2 conformer of 2,3-dimethylbutane has been observed, assigned, and analyzed. Its C 2h conformer, undoubtedly present, is nonpolar and therefore has no observable microwave spectrum. Ab initio calculations of both compounds agree with the experimental results.

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✍ LΓ­dia C. Albuquerque; Luisa C. Moita; Ana N. SimΓ΅es; Raquel C. GonΓ§alves; EugΓ©ni πŸ“‚ Article πŸ“… 1998 πŸ› John Wiley and Sons 🌐 English βš– 91 KB πŸ‘ 1 views

Rate constants, k, were determined for the solvolytic reactions of 2-bromo-2-methylbutane, 2-chloro-2methylbutane and 3-chloro-3-methylpentane in 10 pure diols at 298.15 K. The Gibbs energies of activation were calculated in order to study the influence of the solvent and to provide mechanistic info