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Abstract

Aqueous solutions of the ternary system Ni(II)-EDTA-CN- are investigated with X-ray Absorption Spectroscopy (XAS) as a function of cyanide concentration with an enhanced laboratory von Ha ' mos X-ray spectrometer. The near-edge structure of the spectra identifies unambiguously the formation of the pentacyanidonickel(II) complex at excess CN- concentrations. An analysis of the extended energy range of the XAS spectra reveals the molecular structure of the distinct molecular components present and provides a detailed description of the barely detectable mixed ligand [NiEDTA(CN)](3-) complex. This thorough Extended X-ray Absorption Fine Structure (EXAFS) study demonstrates the potential of the emerging laboratory XAS spectrometers to become routine probes in various areas of chemistry, materials science, physics and related disciplines.

Published in

Physical Chemistry Chemical Physics
2019, volume: 21, number: 18, pages: 9239-9245
Publisher: ROYAL SOC CHEMISTRY

SLU Authors

  • Bajnóczi, Eva

    • Hungarian Academy of Sciences

UKÄ Subject classification

Atom and Molecular Physics and Optics

Publication identifier

  • DOI: https://doi.org/10.1039/c9cp00982e

Permanent link to this page (URI)

https://res.slu.se/id/publ/101008