Crystal structure and spectroscopy studies of the thulium acid pyrophosphate HTmP2O7·3H2O
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https://doi.org/10.1016/j.molstruc.2020.129157 |
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Título
Crystal structure and spectroscopy studies of the thulium acid pyrophosphate HTmP2O7·3H2OAutoría
Fecha de publicación
2020-09-02Editor
ElsevierISSN
0022-2860Cita bibliográfica
TAHIRI, Aziz Alaoui, et al. Crystal structure and spectroscopy studies of the thulium acid pyrophosphate HTmP2O7· 3H2O. Journal of Molecular Structure, vol. 1224, p. 129157.Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
https://www.sciencedirect.com/science/article/pii/S0022286020314794#!Versión
info:eu-repo/semantics/publishedVersionPalabras clave / Materias
Resumen
Crystals of HTmP2O7·3H2O were prepared via a soft chemistry route. Its crystal structure was solved from single-crystal diffraction data. The compound crystallises in the triclinic space group P-1, with the unit cell ... [+]
Crystals of HTmP2O7·3H2O were prepared via a soft chemistry route. Its crystal structure was solved from single-crystal diffraction data. The compound crystallises in the triclinic space group P-1, with the unit cell parameters: a = 6.3724(4) Å, b = 6.8224(3) Å, c = 9.7299(5) Å, α = 82.039(4) °, β = 79.758(5) °, γ = 88.200(4) ° and Z = 2. In its lamellar structure, edge-sharing polyhedra of eightfold coordinated Tm(III) form chains along [010]. These chains are joined in turn to each other using pyrophosphates O-P-O bridges. A network of Osingle bondH…O hydrogen bonds reinforces the cohesion of the structure. The IR spectrum of HTmP2O7·3H2O is interpreted on the basis of characteristic vibrations of PO3 group, POP bridge, and in addition, H2O. The optical properties of HTmP2O7·3H2O were analysed with UV–Vis. The spectrum is characterized by bands corresponding to the transitions starting from the 3H6 ground state to the different higher levels 1G4, 3F2, 3F3, 3H5, and 3F4 of Tm3+ ion. [-]
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Journal of Molecular Structure Volume 1224, 15 January 2021, 129157Proyecto de investigación
18–10438S CZ.2.16/3.1.00/24510Derechos de acceso
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