Fig. 6
Uranium LIII-edge XANES spectra. a U(VI)-standard, b U(IV)-standard, c complex 4, d complex 3, and e [UI3(THF)4]. Black dots mark the point where the second derivative of that XANES spectrum crosses zero (edge). Red dots indicate the position of the primal spectral XANES peak energy (white line) for that spectrum (where first derivative of the XANES trace crosses zero). The estimated uncertainty is ±0.2 eV
