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- W4300821493 abstract "The following chapter provides a comprehensive overview of time-resolved photocrystallography studies, and related experimental and methodological progress. Particular emphasis is put on research dedicated to transition-metal coordination compounds. The introduction of synchrotron radiation has led to a major breakthrough in experimental capabilities in the field. Also, for small-molecule time-resolved photocrystallography the application of the polychromatic Laue method appeared essential. Thus, beamlines used for ultrafast (ca. 100 ps time resolution) experiments employing the Laue method are described in detail. Similarly, data processing techniques are outlined paying particular attention to advances in the Laue method: new X-ray diffraction signal evaluation methods, orientation matrix search and structural refinements based on intensity ratios. Examples described in this chapter comprise a set of complexes where significant structural changes were observed with atomic resolution. These include photoactive compounds in which inner part of the molecule undergoes bond shortening (e.g. cage of ‘half-cage’ complexes with metallophilic Pt ⋯ Pt or Rh ⋯ Rh interactions), compounds forming excimers in the solid state upon irradiation (pyrazolate copper complex), photoactive model complexes of relevance to solar-energy applications (copper ionic complexes), and finally, spin cross-over systems (iron complex). In addition, some selected examples of time-resolved studies with macromolecules and purely organic molecules are presented for comparison. Comments on recent results and future prospects concerning the application of X-ray free electron laser sources and laboratory diffractometers are provided." @default.
- W4300821493 created "2022-10-04" @default.
- W4300821493 creator A5076799634 @default.
- W4300821493 creator A5084194392 @default.
- W4300821493 date "2023-01-01" @default.
- W4300821493 modified "2023-09-29" @default.
- W4300821493 title "Time resolved structural studies in molecular materials" @default.
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