On the detection by EXAFS spectroscopy of multimeric species and of complex anions in diethylether and diethylcarbonate View Full Text


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Article Info

DATE

1981-09

AUTHORS

J. Goulon, C. Goulon-Ginet, M. Chabanel

ABSTRACT

EXAFS spectroscopy has been shown to be a reliable tool for detecting the formation in solutions of molecular associations (LiBr)n where n is solvent dependent. The signal Br*...Br observed at 3.87 Å confirms the formation of tetrameric species (n=4) in diethylether (Et2O) but only of dimers (n=2) in diethylcarbonate. Another signal observed at 2.45 Å has·been attributed to the pair Br*...Li. The study of Li2MBr4−Et2O solutions (M=Co, Cu, Zn) also affords new evidence for the formation of complex anions MBr4′2− but the spectra obtained at the bromine or metalK-edges for LiZnBr3−Et2O solutions seems to indicate the formation of more complex aggregates (LiMBr3)q. While the signal of the shell Br*...Br is found quite intense for the reference CBr4−Et2O system, it does not appear for the MBr42− complex except for CuBr42− where the Jahn-Teller effect might rigidify a distorted tetrahedral structure. More... »

PAGES

649-672

References to SciGraph publications

  • 1931-05. Zur Theorie der Feinstruktur in den Röntgenabsorptionsspektren in ZEITSCHRIFT FÜR PHYSIK A HADRONS AND NUCLEI
  • 1963-01. Properties and electronic structure of tetrahalogenocuprate (II)-complexes in THEORETICAL CHEMISTRY ACCOUNTS
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    http://scigraph.springernature.com/pub.10.1007/bf00650740

    DOI

    http://dx.doi.org/10.1007/bf00650740

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