[en] Several compounds of the (Na1-xLix)CdIn2(PO4)(3) solid solution were synthesized by a solid-state reaction in air, and pure alluaudite-like compounds were obtained for x = 0.00, 0.25, and 0.50. X-ray Rietveld refinements indicate the occurrence of Cd2+ in the M(1) site, and of In3+ in the M(2) site of the alluaudite structure. This non-disordered cationic distribution is confirmed by the sharpness of the infrared absorption bands. The distribution of Na+ and Li+ on the A(1) and A(2)' crystallographic sites cannot be accurately assessed by the Rietvled method, probably because the electronic densities involved in the Na+ --> Li+ substitution are very small. A comparison with the synthetic alluaudite-like compounds, (Na1-xLix)MnFe2(PO4)(3), indicates the influence of the cations occupying the M(1) and M(2) sites on the coordination polyhedra morphologies of the A(1) and A(2)' crystallographic sites. (C) 2002 Elsevier Science.
Disciplines :
Physics Chemistry
Author, co-author :
Hatert, Frédéric ; Université de Liège - ULiège > Département de géologie > Minéralogie et cristallochimie
Antenucci, Diano ; Université de Liège - ULiège > Minéralogie et cristallochimie
Fransolet, André-Mathieu ; Université de Liège - ULiège > Département de géologie > Minéralogie et cristallochimie
Liegeois-Duyckaerts, M.
Language :
English
Title :
The crystal chemistry of lithium in the alluaudite structure: A study of the (Na1-xLix)Cdln(2) (PO4)(3) the solid solution (x=0 to 1)
Publication date :
January 2002
Journal title :
Journal of Solid State Chemistry
ISSN :
0022-4596
eISSN :
1095-726X
Publisher :
Academic Press Inc Elsevier Science, San Diego, United States - California
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