Rare-earth site splitting in Sm3MoO7.
Trisamarium molybdenum heptaoxide, Sm(3)MoO(7), is isomorphous with Ln(3)MoO(7) (Ln = La and Pr). The crystal structure consists of chains of corner-linked MoO(6) octahedra running parallel to the b axis and separated from each other by seven- or eight-coordinate Sm-O polyhedra. In contrast to La(3)MoO(7) and Pr(3)MoO(7), a splitting of one Sm site into two positions is observed.
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Laboratoire CRISMAT, UMR CNRS 6508, 6 Boulevard Maréchal Juin, 14050 Caen Cedex 4, France.
Gall
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Gougeon
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