✦ LIBER ✦

The Absolute Proton Affinity for Isobutene

✍ Scribed by John C. Traeger

Publisher: John Wiley and Sons
Year: 1996
Tongue: English
Weight: 357 KB
Volume: 10
Category: Article
ISSN: 0951-4198
DOI: 10.1002/(sici)1097-0231(19960115)10:1<119::aid-rcm418>3.0.co;2-o

No coin nor oath required. For personal study only.

✦ Synopsis

Threshold photoionization mass spectrometry has been used to measure the appearance energies for the formation of C,H; from isobutane, neopentane and tert-butyl iodide. From the value of 10.821 *0.008 eV for isobutane, a 298 K heat of formation for the tert-butyl cation of 711.4 f 1.1 kJ mol-' is derived, which leads to an absolute proton a n i t y for isobutene of 801.7* 1.4 kJ mol-'.

📜 SIMILAR VOLUMES

Absolute proton affinities of some subst

Absolute proton affinities of some substituted toluenes: the additivity rule of thumb for ipso attack

✍ Mirjana Eckert-Maksić; Andrea Knežević; Zvonimir B. Maksić 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 134 KB

The problem of the ipso protonation of toluene and its predominantly disubstituted derivatives was considered by the MP2(fc)/6-31G \*\* //HF/6-31G \* ZPE(HF/6-31G \* ) theoretical model. The substituents involved covered a wide range of different donor-acceptor capabilities. It is shown that the cal

Proton affinity correlations for alkyl c

Proton affinity correlations for alkyl chlorides

✍ William L. Jorgensen 📂 Article 📅 1978 🏛 Elsevier Science 🌐 English ⚖ 412 KB

Ab initio SCF calculations with minimal STO-3G and extended 44-31G basis Sets have been performed on the simple alkyl chlorides, HCl to t-BuCI, and their protonated analogs. MINDO/3 calculations are also reported for these species and a variety of cyclic and bicyclic chlorides. The much closer agree

The proton affinity of HOBr

✍ Timothy J. Lee; Joseph S. Francisco 📂 Article 📅 1996 🏛 Elsevier Science 🌐 English ⚖ 351 KB

The proton affinity of methyl nitrate

✍ Andreina Ricci 📂 Article 📅 1994 🏛 John Wiley and Sons 🌐 English ⚖ 142 KB

SiH+5 and the proton affinity of monosil

SiH+5 and the proton affinity of monosilane

✍ T.M.H. Cheng; F.W. Lampe 📂 Article 📅 1973 🏛 Elsevier Science 🌐 English ⚖ 233 KB

Tandem mass spectrometric studies show that SiH; is formed in bimolecular reactions of SiH, with NH;, C,H<, GHz and C,Hi ions. The dependence of the reaction cross sections on ion energy indicates the formation of SiH; from NH;, C,H:, and C,Hi to be esothcrmic reactions, while formation from C,Hi is

Absolute Potassium Cation Affinities (PC

Absolute Potassium Cation Affinities (PCAs) in the Gas Phase

✍ Justin Kai-Chi Lau; Carrie Hoi Shan Wong; Po Shan Ng; Fung Ming Siu; Ngai Ling M 📂 Article 📅 2003 🏛 John Wiley and Sons 🌐 English ⚖ 271 KB 👁 2 views