Structural determination of a transient isomer of CH2I2 by picosecond x-ray diffraction

Davidsson, Jan (author)

Poulsen, Jens Aage, 1972 (author): Gothenburg University,Göteborgs universitet,Institutionen för kemi,Department of Chemistry,University of Gothenburg

Cammarata, Marco (author)

Georgiou, Panos (author)

Wouts, Remco (author)

Katona, Gergely, 1975 (author)

Jacobson, Frida, 1975 (author): Chalmers tekniska högskola,Chalmers University of Technology

Plech, Anton (author)

Wulff, Michael (author)

Nyman, Gunnar, 1957 (author): Gothenburg University,Göteborgs universitet,Institutionen för kemi,Department of Chemistry,University of Gothenburg

Neutze, Richard, 1969 (author): Gothenburg University,Göteborgs universitet,Institutionen för kemi,Department of Chemistry,Chalmers tekniska högskola,Chalmers University of Technology,University of Gothenburg

(creator_code:org_t)

Related links:: https://gup.ub.gu.se...; show more...; https://doi.org/10.1...; https://research.cha...; show less...

Abstract Subject headings

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.

By the author/editor: Davidsson, Jan; Poulsen, Jens Aa ...; Cammarata, Marco; Georgiou, Panos; Wouts, Remco; Katona, Gergely, ...; show more...; Jacobson, Frida, ...; Plech, Anton; Wulff, Michael; Nyman, Gunnar, 1 ...; Neutze, Richard, ...; show less...

About the subject

NATURAL SCIENCES: NATURAL SCIENCES; and Chemical Science ...; and Physical Chemist ...

By the university: University of Gothenburg; Chalmers University of Technology

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