Electronic Supplementary Information for Dalton Transactions This journal is © The Royal Society of Chemistry 2006 Structural study of trivalent lanthanide and actinide complexes formed upon solvent extraction Benoît Gannaza, Mark R. Antonio*b, Renato Chiariziab, Clément Hilla, and Gérard Cotec a CEA-Valrhô, DEN/VRH/DRCP/SCPS/LCSE, B.P. 17171, 30207 Bagnols-sur- Cèze Cedex, France b Chemistry Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439-4831 USA. E-mail: mantonio@anl.gov; Fax: +(630) 252 4225; Tel: +(630) 252 9267 Ecole Nationale Supérieure de Chimie de Paris, Laboratoire d’Electrochimie et c de Chimie Analytique (UMR CNRS no. 7575), 11 rue Pierre et Marie Curie, 75005 Paris, France Fits of k3χ(k) EXAFS data corresponding to the results of Table 2 for the twoshell (O, P) fits to the single-extractant, 5-series of M3+ complexes with HDHP. Fits of k3χ(k) EXAFS data corresponding to the results of Table 3 for the oneshell (O) fits to the single-extractant, 8-series of M3+ complexes with DMDOHEMA. 2 Results of PCA, principal component (factor) analysis, for the Am L3-edge k3χ(k) EXAFS of the single-extractant systems (5Am/HDHP and 8Am/DMDOHEMA) and the binary-extractant HDHP/DMDOHEMA systems (18Am, 19Am, and 20Am as well as 29Am with HDEHP/DMDOHEMA). 3 Linear combination fits of the M3+ EXAFS for the binary-extractant HDHP/DMDOHEMA systems with the corresponding M3+ EXAFS for the single-extractant HDHP (5M) and DMDOHEMA (8M) systems corresponding to the data of Table 4. The red line is the experimental EXAFS and the blue line is the fit. 18NdNT 1.2 norm. absorption [a.u.] 1.1 1.0 0.9 6.25 6.3 6.35 6.4 photon energy [keV] 18AmNT norm. absorption [a.u.] 1.5 1.0 0.5 18.45 18.5 18.55 18.6 photon energy [keV] 18.65 18.7 18.75 4 19AmNT norm. absorption [a.u.] 1.5 1.0 0.5 18.45 18.5 18.55 18.6 18.65 18.7 photon energy [keV] 19YbNT 1.2 1.15 norm. absorption [a.u.] 1.1 1.05 1.0 0.95 0.9 0.85 9 9.05 9.1 photon energy [keV] 9.15 18.75 5 20NdNT 1.2 norm. absorption [a.u.] 1.1 1.0 0.9 6.25 6.3 6.35 6.4 photon energy [keV] 20AmNT norm. absorption [a.u.] 1.5 1.0 0.5 18.45 18.5 18.55 18.6 photon energy [keV] 18.65 18.7 18.75 6 20EuNT 1.15 1.1 norm. absorption [a.u.] 1.05 1.0 0.95 0.9 0.85 0.8 7.05 7.1 7.15 7.2 photon energy [keV] 20YbNT 1.1 1.05 norm. absorption [a.u.] 1.0 0.95 0.9 0.85 0.8 9 9.05 9.1 photon energy [keV] 9.15