[1] Univ Montpellier, Inst Charles Gerhardt Montpellier UMR CNRS UM ENS, F-34095 Montpellier 05, France
[2] Univ Ghent, Ctr Mol Modeling, B-9052 Zwijnaarde, Belgium
[3] Univ Versailles St Quentin, Inst Lavoisier Versailles, UM 8180, F-78035 Versailles, France
[4] DSTF SEPC STEP, PSA Peugeot Citroen Direct Sci & Technol Futures, F-78943 Velizy Villacoublay, France
[5] Aix Marseille Univ, CNRS, MADIREL UMR 7246, Ctr Sci St Jerome, F-13397 Marseille 20, France
[6] Synchrotron Soleil, Lorme Merisiers, F-91192 Gif Sur Yvette, France