Thermal Expansion Behavior in TcO2. Toward Breaking the Tc-Tc Bond

Authors

Emily Reynolds, University of Oxford
Zhaoming Zhang, Australian Nuclear Science and Technology Organisation
Maxim Avdeev, Australian Nuclear Science and Technology OrganisationFollow
Gordon J. Thorogood, Australian Nuclear Science and Technology Organisation
Frederic Poineau, University of Nevada, Las VegasFollow
Kenneth R. Czerwinski, University of Nevada, Las VegasFollow
Justin A. Kimpton, Australian Synchrotron
Brendan J. Kennedy, University of Sydney

Document Type

Article

Publication Date

1-1-2017

Publication Title

Inorganic Chemistry

Volume

56

Issue

15

First page number:

9219

Last page number:

9224

Abstract

The structure of TcO2 between 25 and 1000 °C has been determined in situ using X-ray powder diffraction methods and is found to remain monoclinic in space group P21/c. Thermal expansion in TcO2 is highly anisotropic, with negative thermal expansion of the b axis observed above 700 °C. This is the result of an anomalous expansion along the a axis that is a consequence of weakening of the Tc-Tc bonds. © 2017 American Chemical Society.

Language

english

Repository Citation

Reynolds, E., Zhang, Z., Avdeev, M., Thorogood, G. J., Poineau, F., Czerwinski, K. R., Kimpton, J. A., Kennedy, B. J. (2017). Thermal Expansion Behavior in TcO2. Toward Breaking the Tc-Tc Bond. Inorganic Chemistry, 56(15), 9219-9224.
http://dx.doi.org/10.1021/acs.inorgchem.7b01235