Hydrothermal synthesis, crystal structure, thermal behaviour, IR and Raman spectroscopy of Na3Y(CO3)3.6 H2O

A new sodium yttrium carbonate hydrate, Na3Y(CO3)36 H2O, is prepared by hydrothermal synthesis and characterized by single crystal X-ray diffraction, thermal analysis, IR and Raman spectroscopy. Na3Y(CO3)36 H2O crystallizes in the hexagonal system, space group P63; a=11.347(5) A, c=5.935(5) A; V=661...

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Veröffentlicht in:	Comptes rendus. Chimie 2004-06, Vol.7 (6-7), p.661-668
Hauptverfasser:	AMOR BEN ALI, MOHAMED OSMAN AWALEH, LEBLANC, Marc, SMIRI, Leila Samia, MAISONNEUVE, Vincent, HOULBERT, Sylvie
Format:	Artikel
Sprache:	eng
Schlagworte:	Condensed matter: electronic structure, electrical, magnetic, and optical properties Condensed matter: structure, mechanical and thermal properties Exact sciences and technology Infrared and raman spectra and scattering Inorganic compounds Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation Other nonmetallic inorganics Physics Salts Structure of solids and liquids crystallography Structure of specific crystalline solids
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Zusammenfassung:	A new sodium yttrium carbonate hydrate, Na3Y(CO3)36 H2O, is prepared by hydrothermal synthesis and characterized by single crystal X-ray diffraction, thermal analysis, IR and Raman spectroscopy. Na3Y(CO3)36 H2O crystallizes in the hexagonal system, space group P63; a=11.347(5) A, c=5.935(5) A; V=661.8(5) A3; Z=2. Refinements yield R(F2)=0.058and Rw(F2)=0.161for 692unique reflections. The structure is built up from [YO3+3+3] polyhedra surrounded by [NaO6] octahedra. Carbonate groups form infinite layers at z approx 0.175and z approx 0.675. Dehydration of Na3Y(CO3)36 H2O yields an amorphous carbonate.
ISSN:	1631-0748 1878-1543
DOI:	10.1016/j.crci.2004.03.007