Pentanary and Hexanary Alkali Lanthanide Germanates Grown from Lanthanide Rich Flux Growth Reactions

Single crystals of five compounds of a new structure type, the K3Nd52Ge12O100F7 type, were grown from lanthanide rich reactions using a KF/KCl flux: K3Ln52Ge12O100F7 (Ln = Nd, Eu), K3Ln52Ge12O100+δF7-δ (Ln = Pr, Tb), and K3Ca0.872Nd51.128Ge12O99.128F7.872. The five compounds crystallize in the cubic space group I-43d with lattice parameter 22.0350(2) Å for K3Nd52Ge12O100F7. The structure consists of a 3D checkerboard of LnX8, LnX7, LnX6, and GeO4 polyhedra, where X = O/F, and can be conceptually derived from the fluorite structure. K3Eu52Ge12O100F7 exhibits the fluorescence typical of Eu3+.

Publication Details

Journal
Scholar Commons (University of South Carolina)
Published
2025-10-01
DOI
https://doi.org/10.1016/j.solidstatesciences.2025.108055">https://doi.org/10.1016/j.solidstatesciences.2025.108055</a></p
Primary Topic
Inorganic Fluorides and Related Compounds
Type
article
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article

Pentanary and Hexanary Alkali Lanthanide Germanates Grown from Lanthanide Rich Flux Growth Reactions

Scholar Commons (University of South Carolina)
Inorganic Fluorides and Related Compounds
article

Pentanary and Hexanary Alkali Lanthanide Germanates Grown from Lanthanide Rich Flux Growth Reactions

article en

Abstract

Single crystals of five compounds of a new structure type, the K3Nd52Ge12O100F7 type, were grown from lanthanide rich reactions using a KF/KCl flux: K3Ln52Ge12O100F7 (Ln = Nd, Eu), K3Ln52Ge12O100+δF7-δ (Ln = Pr, Tb), and K3Ca0.872Nd51.128Ge12O99.128F7.872. The five compounds crystallize in the cubic space group I-43d with lattice parameter 22.0350(2) Å for K3Nd52Ge12O100F7. The structure consists of a 3D checkerboard of LnX8, LnX7, LnX6, and GeO4 polyhedra, where X = O/F, and can be conceptually derived from the fluorite structure. K3Eu52Ge12O100F7 exhibits the fluorescence typical of Eu3+.

Scholar Commons (University of South Carolina)
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Inorganic Fluorides and Related Compounds
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