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Structural determin...
Structural determination of a transient isomer of CH2I2 by picosecond x-ray diffraction
- Article/chapterEnglish2005
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LIBRIS-ID:oai:gup.ub.gu.se/56990
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https://gup.ub.gu.se/publication/56990URI
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https://doi.org/10.1103/PhysRevLett.94.245503DOI
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https://research.chalmers.se/publication/56990URI
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
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Ultrafast time-resolved spectroscopic studies of complex chemical reactions in solution are frequently hindered by difficulties in recovering accurate structural models for transient photochemical species. Time-resolved x-ray and electron diffraction have recently emerged as techniques for probing the structural dynamics of short lived photointermediates. Here we determine the structure of a transient isomer of photoexcited CH2I2 in solution and observe the downstream reactions of the initial photoproducts. Our results illustrate how geminate recombination proceeds via the formation of a transient covalent bond onto the iodine atom remaining with the parent molecule. Further intramolecular rearrangements are thus required for the CH2I-I isomer to return to CH2I2. The generation of I-3(-) from those iodine radicals escaping the solvent cage is also followed with time.
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Poulsen, Jens Aage,1972Gothenburg University,Göteborgs universitet,Institutionen för kemi,Department of Chemistry,University of Gothenburg(Swepub:gu)xpouje
(author)
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Cammarata, Marco
(author)
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Georgiou, Panos
(author)
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Wouts, Remco
(author)
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Katona, Gergely,1975
(author)
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Jacobson, Frida,1975Chalmers tekniska högskola,Chalmers University of Technology
(author)
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Plech, Anton
(author)
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Wulff, Michael
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Nyman, Gunnar,1957Gothenburg University,Göteborgs universitet,Institutionen för kemi,Department of Chemistry,University of Gothenburg(Swepub:gu)xnymgu
(author)
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Neutze, Richard,1969Gothenburg University,Göteborgs universitet,Institutionen för kemi,Department of Chemistry,Chalmers tekniska högskola,Chalmers University of Technology,University of Gothenburg(Swepub:cth)xneuri
(author)
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Göteborgs universitetInstitutionen för kemi
(creator_code:org_t)
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In:Physical Review Letters94:240031-90071079-7114
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Davidsson, Jan
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Cammarata, Marco
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Georgiou, Panos
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Wouts, Remco
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Katona, Gergely, ...
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Jacobson, Frida, ...
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Plech, Anton
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Wulff, Michael
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NATURAL SCIENCES
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University of Gothenburg
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Chalmers University of Technology