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Abstract
A technique of three-dimensional (3D) local structure refinement is proposed and demonstrated by applying it to the metal complex $\mathrm{Ni}(\mathrm{acacR}{)}_{2}$. The method is based on the fitting of experimental x-ray absorption near-edge structure (XANES) using a multidimensional interpolation of spectra and full potential calculations of XANES. The low number of calculations required is the main advantage of the method, which allows a computationally time-expensive method using a non-muffin-tin potential to be applied. The possibility to determine bond angles in addition to bond lengths accessible to extended x-ray-absorption fine structure opens new perspectives of XANES as a 3D structure probe.
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