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Updated: May 22, 2026
08:55
Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
Published on: June 7, 2018
Garnet-type Mn(3)Cr(2)(GeO(4))(3).
Christian Lipp1, Sabine Strobel, Falk Lissner
1Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany.
Summary
Single crystals of trimanganese(II) dichromium(III) tris-[orthogermanate(IV)] were synthesized using a chemical transport reaction. This garnet-type material features distinct crystallographic sites for manganese, chromium, and germanium ions.
Area of Science:
- Solid-state chemistry
- Crystallography
- Materials science
Background:
- Garnet structures are known for their diverse applications.
- Understanding the site occupancy and bonding in novel garnet compounds is crucial for materials design.
Purpose of the Study:
- To synthesize single crystals of trimanganese(II) dichromium(III) tris-[orthogermanate(IV)].
- To determine the crystallographic site occupancy and coordination environments of the constituent ions.
Main Methods:
- Chemical transport reaction for crystal growth.
- X-ray crystallography for structure determination.
Main Results:
- Successfully obtained single crystals of Mn(3)Cr(2)(GeO(4))(3).
- Mn(2+) ions occupy the A position, coordinated by eight oxygen atoms in a distorted cube.
- Cr(3+) ions are located at the B position, within a slightly distorted octahedral environment of six oxygen atoms.
- Ge(4+) ions form isolated [GeO(4)](4-) tetrahedra.
Conclusions:
- The synthesized compound adopts the garnet structure with specific site occupancies.
- The determined crystal structure provides insights into the bonding and coordination of ions in this novel germanate garnet.
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