2013/02/05 by Shaunna M. Morrison, Marcelo B. Andrade, Michelle D. Wenz +2 · 1 citation
Materials Science · Chemistry · #Lanthanide and Transition Metal Complexes #Radioactive element chemistry and processing #Crystal structures of chemical compounds
paper · doi:10.1107/s1600536813003164
openalex publication_date 2013/02/05 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/31
Lanthanite-(Nd), ideally Nd2(CO3)3·8H2O [dineodymium(III) tricarbonate octa-hydrate], is a member of the lanthanite mineral group characterized by the general formula REE2(CO3)3·8H2O, where REE is a 10-coordinated rare earth element. Based on single-crystal X-ray diffraction of a natural sample from Mitsukoshi, Hizen-cho, Karatsu City, Saga Prefecture, Japan, this study presents the first structure determination of lanthanite-(Nd). Its structure is very similar to that of other members of the lanthanite group. It is composed of infinite sheets made up of corner- and edge-sharing of two NdO10-polyhedra (both with site symmetry ..2) and two carbonate triangles (site symmetries ..2 and 1) parallel to the ab plane, and stacked perpendicular to c. These layers are linked to one another only through hydrogen bonding involving the water mol-ecules.