Accurate X-ray Absorption Spectra of Dilute Systems: Absolute Measurements and Structural Analysis of Ferrocene and Decamethylferrocene
MT Islam, SP Best, JD Bourke, LJ Tantau, CQ Tran, F Wang, CT Chantler
JOURNAL OF PHYSICAL CHEMISTRY C | AMER CHEMICAL SOC | Published : 2016
X-ray absorption fine structure (XAFS) of ferrocene (Fc) and Decamethylferrocene (DmFc) have been determined on an absolute scale using transmission measurements of multiple solutions of differing concentrations (15 mM, 3 mM, pure solvent) at operating temperatures of 10-20 K. Mass attenuation coefficients and photoelectric absorption cross sections are measured and tabulated for both molecules for an extended energy range in excess of 1.5 keV from the Fe K-shell absorption edge. At these temperatures, the minimization of of dynamic disorder has enabled a critical determination of the oscillatory absorption structures created by multiple-scattering paths of the excited photoelectron. These o..View full abstract
We acknowledge the Australian Research Council (ARC) and the science faculty of the University of Melbourne for funding this work. The authors would like to thank the staff of the Australian National Beamline Facility (ANBF), Tsukuba, Japan, where the experiment was performed for their assistance in this work. As the ANBF is now closed, we dedicate this work to the efforts of the Australian and Japanese scientists who have worked together to make the beamline and collaboration such a success.