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Zeitschrift für Naturforschung B

A Journal of Chemical Sciences

12 Issues per year


IMPACT FACTOR 2016: 0.631

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1865-7117
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Volume 28, Issue 7-8 (Aug 1973)

Issues

Spektroskopische Untersuchungen in der Festkörperchemie

Anomale Temperaturabhängigkeit von 185Re,187Re-Kernquadrupolspektren bei Perrhenaten / Anomalous Temperature Dependence of 185Re,187Re-NQR-Spectra of Perrhenates

Paul K. Burkert / Max F. Eckel
Published Online: 2014-06-02 | DOI: https://doi.org/10.1515/znb-1973-7-801

185Re,187Re-NQR-spectra of polycrystalline NH4ReO4 and ND4ReO4 show a strong temperature dependence of their transition frequencies with anomalous positive temperature coefficients in contrast to the behaviour of other measured perrhenates.

The positive values of the temperature coefficients are explained by an additional intermolecular interaction of the cations with ReO4-, which strengthens the intramolecular mechanism of reducing π-bond character with temperature.

Keywords: Rhenium; NQR-spectra; perrhenates

About the article

Received: 1973-03-28

Published Online: 2014-06-02

Published in Print: 1973-08-01


Citation Information: Zeitschrift für Naturforschung B, ISSN (Online) 1865-7117, ISSN (Print) 0932-0776, DOI: https://doi.org/10.1515/znb-1973-7-801.

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© 1946 – 2014: Verlag der Zeitschrift für Naturforschung. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License. BY-NC-ND 3.0

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