Journal article
Time-resolved X-ray scattering of an electronically excited state in solution. Structure of the 3A(2u) state of tetrakis-mu-pyrophosphitodiplatinate(II)
Centre for Molecular Movies, Department of Chemistry and Niels Bohr Institute, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen, Denmark.1
The structure of the (3)A(2u) excited state of tetrakis-mu-pyrophosphitodiplatinate(II) in aqueous solution is investigated by time-resolved X-ray scattering on a time scale from 100 ps to 1 micros after optical pumping. The primary structural parameter, the Pt-Pt distance, is found to be 2.74 A, which is 0.24 A 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 (3)A(2u) excited state was determined to be 2.93 A, 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.
| Language: | English |
|---|---|
| Year: | 2009 |
| Pages: | 502-508 |
| ISSN: | 15205126 and 00027863 |
| Types: | Journal article |
| DOI: | 10.1021/ja804485d |
| ORCIDs: | Feidenhans'l, Robert |
