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Reaction of ionized propene with methanol: Comparison with CH3OH2+ formation from ionized 2-methylpropanol

✍ Scribed by David J. McAdoo; Guohong Zhao; Mohammed S. Ahmed; Charles E. Hudson; C. S. Giam

Publisher: John Wiley and Sons
Year: 1994
Tongue: English
Weight: 386 KB
Volume: 29
Category: Article
ISSN: 1076-5174
DOI: 10.1002/oms.1210290806

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✦ Synopsis

Methanol exchanges its hydroxyl hydrogen with deuterium in ionized propene during the formation of protonated methanol. This exchange is attributed to the interconversion ICH,CH=CHZ' HOCH, + I CH,'CHCH, +H20CH,j in single collisions. The exchange in this ion-molecule reaction is analogous to that observed in the formation of protonated methanol from ionized 2-methylpropanol, supporting the intermediacy of ion-neutral complexes in the final step of the latter reaction. Ion-molecule reactions were studied using a Fourier transform mass spectrometer. 'OCH,], still involve complexes and are thermochemically less likely (estimated4 AH,(d) = 718 kJ mol-', AH,-(e) = 688 kJ mol-' and AHf([CH,+CHCH3 'OCH,] = 755 kJ mol-'): d e (iii) H transfer converting a to its distonic isomer b occurs, but irreversibly; the only detectable reaction CCC 0030-493X/94/080428-04 0 1994 by John Wiley & Sons, Ltd.

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