Dipotassium samarium(III) molybdate(VI) phosphate(V), K(2)Sm(MoO(4))(PO(4))
Summary
Potassium samarium double molybdates and phosphates were synthesized using a high temperature solution growth method. The crystal structure reveals two-dimensional anionic layers interconnected by potassium cations.
Area of Science:
- Solid-state chemistry
- Crystallography
- Materials science
Background:
- Double molybdates and phosphates are an important class of inorganic compounds.
- Rare earth elements are crucial in various advanced material applications.
Purpose of the Study:
- To synthesize and characterize the novel compound K(2)Sm(MoO(4))(PO(4)).
- To investigate the crystal structure and structural relationships within the A(2)M(MoO(4))(PO(4)) family.
Main Methods:
- High Temperature Solution Growth (HTSG) method for crystal preparation.
- X-ray diffraction for structural analysis.
Main Results:
- Successful synthesis of K(2)Sm(MoO(4))(PO(4)) under atmospheric conditions.
- The compound is isotypic with other A(2)M(MoO(4))(PO(4)) structures.
- The structure consists of 2D [Sm(MoO(4))(PO(4))](2-) anionic layers stacked along the c-axis.
- Potassium cations (K+) occupy eightfold coordination sites between the layers.
- The SmO(8), MoO(4), and PO(4) polyhedra exhibit C2 symmetry.
Conclusions:
- K(2)Sm(MoO(4))(PO(4)) represents a new member of the A(2)M(MoO(4))(PO(4)) family.
- The HTSG method is effective for growing such compounds.
- The detailed structural analysis provides insights into the bonding and packing in these layered materials.
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