Pr(16)Mo(21)O(56)

Area of Science:

• Solid-state chemistry
• Inorganic chemistry
• Crystallography

Background:

• Rare earth molybdate structures provide insights into complex inorganic frameworks.
• Understanding the arrangement of metal-oxygen polyhedra is crucial for materials science.

Purpose of the Study:

• To elucidate the crystal structure of hexa-deca-praseodymium henicosa-molybden-um hexa-penta-contaoxide (Pr16Mo21O56).
• To compare its structure with other known rare earth (RE) molybdate representatives.

Main Methods:

• Single-crystal X-ray diffraction was likely employed to determine the atomic arrangement.
• Analysis of coordination environments and crystallographic site occupancies.

Main Results:

• The Pr16Mo21O56 structure is isotypic with other RE16Mo21O56 compounds.
• The framework comprises Mo10O18(i)O8(a) units with bioctahedral Mo10 clusters and octahedral MoO6 units.
• Pr3+ cations occupy irregular voids with coordination numbers ranging from 8 to 11.

Conclusions:

• The study details the specific atomic arrangement and bonding within Pr16Mo21O56.
• The findings contribute to the understanding of structure-property relationships in rare earth molybdates.