Ligand manipulation of charge transfer excited state relaxation and spin crossover in [Fe(2,2′-bipyridine)2(CN)2]

relaxation and spin crossover in [Fe(2,2-bipyridine)2(CN)2] Kasper S. Kjær, Wenkai Zhang, Roberto Alonso-Mori, Uwe Bergmann, Matthieu Chollet, Ryan G. Hadt, Robert W. Hartsock, Tobias Harlang, Thomas Kroll, Katharina Kubiček, Henrik T. Lemke, Huiyang W. Liang, Yizhu Liu, Martin M. Nielsen, Joseph S. Robinson, Edward I. Solomon, Dimosthenis Sokaras, Tim B. van Driel, Tsu-Chien Weng, Diling Zhu, Petter Persson, Kenneth W€ arnmark, Villy Sundstr€ om, and Kelly J. Gaffney PULSE Institute, SLAC National Accelerator Laboratory, Stanford University, Menlo Park, California 94025, USA Centre for Molecular Movies, Department of Physics, Technical University of Denmark, DK-2800 Lyngby, Denmark Division of Chemical Physics, Department of Chemistry, Lund University, Box 124, SE-22100 Lund, Sweden Department of Physics, Beijing Normal University, Beijing 100875, China LCLS, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA Department of Chemistry, Stanford University, Stanford, California 94305, USA SSRL, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA Deutsches Elektronen-Synchrotron (DESY), Photon Science, Notkestraße 85, 22607 Hamburg, Germany Max Planck Institute for Biophysical Chemistry, Am Faßberg 11, 37077 G€ ottingen, Germany HPSTAR, 1690 Cailun Rd., Pudong, Shanghai 201203, China Division of Theoretical Chemistry, Department of Chemistry, Lund University, Box 124, SE-22100 Lund, Sweden Center for Analysis and Synthesis, Department of Chemistry, Lund University, Box 124, SE-22100 Lund, Sweden