Ultrafast two-color x-ray emission spectroscopy reveals excited state landscape in a base metal dyad / Michal Nowakowski, Marina Huber-Gedert, Hossam Elgabarty, Aleksandr Kalinko, Jacek Kubicki, Ahmet Kertmen, Natalia Lindner, Dmitry Khakhulin, Frederico A. Lima, Tae-Kyu Choi, Mykola Biednov, Lennart Schmitz, Natalia Piergies, Peter Zalden, Katharina Kubicek, Angel Rodriguez-Fernandez, Mohammad Alaraby Salem, Sophie E. Canton, Christian Bressler, Thomas D. Kühne, Wojciech Gawelda, and Matthias Bauer