High spin ↔ low spin ultrafast excitation and relaxation of an isolated iron(II) complex. G. Galle, J. Tribollet, G. Jonusauskas, M. Tondusson, C. Mauriac, J.F. Létard and E. Freysz EPJ Web of Conferences, 41 (2013) 05010 Published online: 13 March 2013 DOI: 10.1051/epjconf/20134105010