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Article: Ultraviolet photolysis of CH2I2 in methanol: O-H insertion and HI elimination reactions to form a dimethoxymethane product

TitleUltraviolet photolysis of CH2I2 in methanol: O-H insertion and HI elimination reactions to form a dimethoxymethane product
Authors
Issue Date2005
PublisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/jpca
Citation
Journal Of Physical Chemistry A, 2005, v. 109 n. 6, p. 1247-1256 How to Cite?
AbstractUltraviolet photolysis of low concentrations of CH2I2 in methanol solution found that CH2I2 is converted into dimethoxymethane and some H+ and I- products. Picosecond time-resolved resonance Raman (ps-TR3) experiments observed that the isodiiodomethane (CH2I-I) photoproduct decayed faster as the concentration of methanol increases, suggesting that isodiiodomethane is reacting with methanol. Ab initio calculations indicate isodiiodomethane is able to react with methanol via an O-H insertion/HI elimination to form an iodoether (ICH2-O-CH3) and HI products. The iodoether can then further react via another O-H insertion/ HI elimination reaction to form the dimethoxymethane (CH3-O-CH2-O-CH3) observed in the photochemistry experiments. A reaction mechanism consistent with these experimental and theoretical observations is proposed.
Persistent Identifierhttp://hdl.handle.net/10722/167895
ISSN
2015 Impact Factor: 2.883
2015 SCImago Journal Rankings: 1.231
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorGuan, Xen_US
dc.contributor.authorLin, Xen_US
dc.contributor.authorKwok, WMen_US
dc.contributor.authorDu, Yen_US
dc.contributor.authorLi, YLen_US
dc.contributor.authorZhao, Cen_US
dc.contributor.authorWang, Den_US
dc.contributor.authorPhillips, DLen_US
dc.date.accessioned2012-10-08T03:12:38Z-
dc.date.available2012-10-08T03:12:38Z-
dc.date.issued2005en_US
dc.identifier.citationJournal Of Physical Chemistry A, 2005, v. 109 n. 6, p. 1247-1256en_US
dc.identifier.issn1089-5639en_US
dc.identifier.urihttp://hdl.handle.net/10722/167895-
dc.description.abstractUltraviolet photolysis of low concentrations of CH2I2 in methanol solution found that CH2I2 is converted into dimethoxymethane and some H+ and I- products. Picosecond time-resolved resonance Raman (ps-TR3) experiments observed that the isodiiodomethane (CH2I-I) photoproduct decayed faster as the concentration of methanol increases, suggesting that isodiiodomethane is reacting with methanol. Ab initio calculations indicate isodiiodomethane is able to react with methanol via an O-H insertion/HI elimination to form an iodoether (ICH2-O-CH3) and HI products. The iodoether can then further react via another O-H insertion/ HI elimination reaction to form the dimethoxymethane (CH3-O-CH2-O-CH3) observed in the photochemistry experiments. A reaction mechanism consistent with these experimental and theoretical observations is proposed.en_US
dc.languageengen_US
dc.publisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/jpcaen_US
dc.relation.ispartofJournal of Physical Chemistry Aen_US
dc.titleUltraviolet photolysis of CH2I2 in methanol: O-H insertion and HI elimination reactions to form a dimethoxymethane producten_US
dc.typeArticleen_US
dc.identifier.emailPhillips, DL:phillips@hku.hken_US
dc.identifier.authorityPhillips, DL=rp00770en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1021/jp046060zen_US
dc.identifier.pmid16833436-
dc.identifier.scopuseid_2-s2.0-14544305450en_US
dc.identifier.hkuros99135-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-14544305450&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume109en_US
dc.identifier.issue6en_US
dc.identifier.spage1247en_US
dc.identifier.epage1256en_US
dc.identifier.isiWOS:000226955800038-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridGuan, X=8313149700en_US
dc.identifier.scopusauthoridLin, X=35205535200en_US
dc.identifier.scopusauthoridKwok, WM=7103129332en_US
dc.identifier.scopusauthoridDu, Y=35310175500en_US
dc.identifier.scopusauthoridLi, YL=27168456500en_US
dc.identifier.scopusauthoridZhao, C=7403563836en_US
dc.identifier.scopusauthoridWang, D=7407071795en_US
dc.identifier.scopusauthoridPhillips, DL=7404519365en_US

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