RT Journal Article
T1 High pressure exploration in the Li–Ln–V–O system
A1 Zadoya, A. I
A1 Arévalo López, Á. M.
A1 Sánchez Benítez, Francisco Javier
A1 Huvé, .M.
A1 Blach, J.-F
A1 Merkel, S.
A1 Hilairet, N.
A1 Chantel, J.
A1 Colmont, M.
AB Using in situ high pressure Raman spectroscopy, two structural changes were observed in a sample of the composition LiLa5O5(VO4)(2). Taking this into account and by combining different conditions, three new compounds were further obtained from high pressure-high temperature synthesis. Their crystal structure description was done using the antiphase approach, which implies the presence of oxygen-centered [OLn(4)] building units, where Ln is La for (1) beta-LiLa5O5(VO4)(2) and (2) beta-LiLa2O2(VO4) or Nd for (3) LiNd5O5(VO4)(2) compounds. (1) crystallizes in the triclinic space group P (1) over bar with unit cell parameters of a = 5.8167(15) angstrom, b = 12.2954(28) angstrom, c = 18.7221(69) angstrom, alpha = 102.03(2)degrees, beta = 98.76(2)degrees, and gamma = 103.54(2)degrees; a 3D structure was deduced from the ambient pressure polymorph. (2) also crystallizes in P (1) over bar with a = 5.8144(7) angstrom, b = 5.8167(7) angstrom, c = 8.5272(1) angstrom, alpha = 98.184(7)degrees, beta = 100.662(7)degrees and gamma = 92.579(7)degrees. It shows a 2D structure with [La2O2](2+) layers surrounded by [LiO4] and [VO4) tetrahedra sharing corners and edges. (3) exhibits a 3D architecture isotypic with AP-LiLa5O5(VO4)(2). The crucial role of high pressure in such types of synthesis and materials is also discussed.
PB Royal Society of Chemistry
SN 1477-9226
SN 1477-9234
YR 2020
FD 2020-10-21
LK https://hdl.handle.net/20.500.14352/116588
UL https://hdl.handle.net/20.500.14352/116588
LA eng
NO Zadoya, A. I., et al. «High Pressure Exploration in the Li–Ln–V–O System». Dalton Transactions, vol. 49, n.o 39, 2020, pp. 13663-70. DOI.org (Crossref), https://doi.org/10.1039/D0DT02721A.
NO Ministerio de Ciencia, Innovacion y Universidades
NO Conseil Régional du NordPas de Calai
NO European Regional Development Fund
DS Docta Complutense
RD 11 abr 2025