Structure and thermal behavior of novel double ceriс phosphates RbCe2(PO4)3 and Rb2Ce(PO4)2 · xH2O
- Authors: Vasilyeva D.N.1,2, Kozlov D.A.1, Protsenko M.R.1,2, Simonenko N.P.1, Kozlova T.O.1, Ivanov V.K.1
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Affiliations:
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences
- National Research University “Higher School of Economics”
- Issue: Vol 70, No 7 (2025)
- Pages: 849-857
- Section: СИНТЕЗ И СВОЙСТВА НЕОРГАНИЧЕСКИХ СОЕДИНЕНИЙ
- URL: https://journals.eco-vector.com/0044-457X/article/view/689475
- DOI: https://doi.org/10.31857/S0044457X25070012
- EDN: https://elibrary.ru/JNXAHP
- ID: 689475
Cite item
Abstract
New double cerium(IV)-rubidium phosphates, RbCe2(PO4)3 and Rb2Ce(PO4)2 · хH2O, have been obtained under hydrothermal conditions. Using the crystallographic parameters of isostructural compounds, the unit cell parameters of RbCe2(PO4)3 and Rb2Ce(PO4)2 · хH2O were calculated from X-ray powder diffraction data. The following values were obtained: for RbCe2(PO4)3, a = 17.494(1) A, b = 6.7759(5) A, c = 7.9831(5) A, β = 102.875(4)°, V = 922.51(10), A3, Z = 4 (space group C2/c); for Rb2Ce(PO4)2 · хH2O, a = b = 6.8663(1) A, c = 17.6562(5) A, V = 832.42(3) A3, Z = 4 (space group I41/amd). Thermal behavior analysis of the synthesized compounds was performed, including phase composition determination of the thermolysis products. The results demonstrate that the initial structures exhibit relative thermal stability, with decomposition onset temperatures of approximately 500°C. At higher temperatures, progressive thermolysis leads to the formation of CePO4 alongside RbPO3 or Rb4P2O7, depending on conditions.
Keywords
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About the authors
D. N. Vasilyeva
Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences; National Research University “Higher School of Economics”
Email: taisiya@igic.ras.ru
Russian Federation, Moscow, 119991; Moscow, 101000
D. A. Kozlov
Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences
Email: taisiya@igic.ras.ru
Russian Federation, Moscow, 119991
M. R. Protsenko
Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences; National Research University “Higher School of Economics”
Email: taisiya@igic.ras.ru
Russian Federation, Moscow, 119991; Moscow, 101000
N. P. Simonenko
Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences
Email: taisiya@igic.ras.ru
Russian Federation, Moscow, 119991
T. O. Kozlova
Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences
Author for correspondence.
Email: taisiya@igic.ras.ru
Russian Federation, Moscow, 119991
V. K. Ivanov
Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences
Email: taisiya@igic.ras.ru
Russian Federation, Moscow, 119991
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