Thermochemistry of Cobalt Trifluoride
- Authors: Nikitin M.I.1, Chilingarov N.S.2, Alikhanyan A.S.1
-
Affiliations:
- Kurnakov Institute of General and Inorganic Chemistry
- Moscow State University
- Issue: Vol 64, No 3 (2019)
- Pages: 377-382
- Section: Physical Methods of Investigation
- URL: https://journal-vniispk.ru/0036-0236/article/view/169289
- DOI: https://doi.org/10.1134/S0036023619030136
- ID: 169289
Cite item
Abstract
The value ΔfH0° (CoF3(cr)) = –861 ± 10 kJ/mol is determined using the data on equilibria of the reactions involving crystalline cobalt(III) fluoride. The features of chemical and thermal behavior of this compound (in particular, its easy hydrolyzability due to hygroscopic properties and vaporization without decomposition to fluorine and difluoride) are explained. The enthalpies of formation of crystalline and gaseous cobalt fluorides CoFn (n = 2–4), as well as some of their negatively charged ions, and electron affinity energies of CoF3 and CoF4 (3.42 and 6.10 eV, respectively) are reported. Quantitative comparison of the efficiencies of iron, manganese, and cobalt trifluorides used as fluorinating agents to synthesize organic and inorganic compounds is performed.
About the authors
M. I. Nikitin
Kurnakov Institute of General and Inorganic Chemistry
Author for correspondence.
Email: nikmi46@mail.ru
Russian Federation, Moscow, 119991
N. S. Chilingarov
Moscow State University
Email: nikmi46@mail.ru
Russian Federation, Moscow, 119991
A. S. Alikhanyan
Kurnakov Institute of General and Inorganic Chemistry
Email: nikmi46@mail.ru
Russian Federation, Moscow, 119991
Supplementary files
