1. European Synchrotron Radiation Facility (ESRF), 71 Avenue des Martyrs, 38043 Grenoble, France
2. Synchrotron SOLEIL, 91192, Gif-sur-Yvette, France
3. Laboratory for Quantum Magnetism, Ecole Polytechnique Fédérale Lausanne, CH-1015 Lausanne, Switzerland
4. LENS, European Laboratory for Non-linear Spectroscopy, Via N. Carrara 1, Sesto Fiorentino, I-50019 Firenze, Italy
5. ICCOM-CNR, Institute of Chemistry of OrganoMetallic Compounds, National Research Council of Italy Via Madonna del Piano 10, I-50019 Sesto Fiorentino, Firenze, Italy
6. Institut de Minéralogie, de Physique des Milieux Condensés et de Cosmochimie (IMPMC), Sorbonne Université, CNRS UMR 7590, MNHN, 4 Place Jussieu, F-75005 Paris, France