Na3La9O3(BO3)8, a new oxyborate in the ternary system Na2-La2O3-B2O3 : preparation and crystal structure
Langue
en
Article de revue
Ce document a été publié dans
Solid State Sciences. 2002, vol. 4, n° 7, p. 993-998
Elsevier
Résumé en anglais
A new oxyborate with a composition corresponding to the formula Na3La9O3(BO3)8 has been discovered in the ternary oxide system Na2O-La2O3-B2O3. Single crystals of this compound have been grown by spontaneous crystallization ...Lire la suite >
A new oxyborate with a composition corresponding to the formula Na3La9O3(BO3)8 has been discovered in the ternary oxide system Na2O-La2O3-B2O3. Single crystals of this compound have been grown by spontaneous crystallization from melts of the constituent binary oxides during slow cooling. The structure of Na3La9O3(BO3)8 has been solved using X-ray data collected on a Nonius Kappa CCD diffractometer (Mo Kα radiation). The unit cell is hexagonal (space group P-62m, Z=1) with a=8.9033(3), c=8.7131(3) Å and V=598.14 Å3. Refinement of 49 parameters using 684 independent reflections with an intensity I>2σ(I) (Friedel not merged for absolute structure determination) results in R1=0.015 (wR2=0.030)...< Réduire
Mots clés en anglais
Oxyborate of sodium and lanthanum
Crystal growth
Crystal structure
Origine
Importé de halUnités de recherche