Time-Resolved X-ray Scattering of an Electronically Excited State in Solution: Structure of the 3A2u State of Tetrakis-µ-pyrophosphitodiplatinate(II)

Research output: Contribution to journalJournal article – Annual report year: 2009Researchpeer-review

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  • Author: Christensen, Morten

    University of Copenhagen, Denmark

  • Author: Haldrup, Kristoffer

    University of Copenhagen, Denmark

  • Author: Bechgaard, Klaus

    University of Copenhagen, Denmark

  • Author: Feidenhans'l, Robert

    University of Copenhagen, Denmark

  • Author: Kong, Qingyu

    European Synchrotron Radiation Facility, France

  • Author: Cammarata, Marco

    European Synchrotron Radiation Facility, France

  • Author: Lo Russo, Manuela

    European Synchrotron Radiation Facility, France

  • Author: Wulff, Michael

    European Synchrotron Radiation Facility, France

  • Author: Harrit, Niels

    University of Copenhagen, Denmark

  • Author: Nielsen, Martin Meedom

    University of Copenhagen, Denmark

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The structure of the 3A2u excited state of tetrakis-μ-pyrophosphitodiplatinate(II) in aqueous solution is investigated by time-resolved X-ray scattering on a time scale from 100 ps to 1 μs after optical pumping. The primary structural parameter, the Pt-Pt distance, is found to be 2.74 Å, which is 0.24 Å shorter than the ground-state value. The contraction is in excellent agreement with earlier estimates based on spectroscopic data in solution and diffraction data in the crystalline state. As a second structural parameter, the distance between the P planes in the 3A2u excited state was determined to be 2.93 Å, i.e., the same as that in the ground state. This result implies that a slight lengthening of the Pt-P bond occurs following excitation.
Original languageEnglish
JournalJournal of the American Chemical Society
Volume131
Issue number2
Pages (from-to)502–508
ISSN0002-7863
DOIs
Publication statusPublished - 2009
Externally publishedYes
CitationsWeb of Science® Times Cited: No match on DOI

ID: 51665410