Related Experiment Video
Updated: Jul 18, 2026

Synthesis of Nine-atom Deltahedral Zintl Ions of Germanium and their Functionalization with Organic Groups
Published on: February 11, 2012
CsR(R(6)CoI(12))2 (R = Gd, Er) and (CeI)0.26(Ce(6)MnI(9))2: two new structure types featuring R(6)Z clusters
Lucas E Sweet1, Timothy Hughbanks
1Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, Texas 77842-3012, USA.
New lanthanide clusters, CsR(R6CoI12)2 and (CeI)0.26(Ce6MnI9)2, were synthesized and structurally characterized. Magnetic studies reveal complex coupling behaviors in these novel lanthanide compounds.
Area of Science:
- Inorganic Chemistry
- Solid-State Chemistry
- Materials Science
Background:
- Lanthanide clusters are of interest for their unique magnetic and electronic properties.
- Exploring new structural types of lanthanide compounds can lead to novel materials with tunable characteristics.
Purpose of the Study:
- To synthesize and characterize novel lanthanide cluster compounds with new structural motifs.
- To investigate the structural and magnetic properties of CsR(R6CoI12)2 (R = Gd, Er) and (CeI)0.26(Ce6MnI9)2.
Main Methods:
- High-temperature solid-state synthesis.
- Single-crystal X-ray diffraction for structural determination.
- Elemental analysis (XPS, AAS) and magnetic susceptibility measurements.
Main Results:
- Two new structure types containing discrete lanthanide clusters were discovered: CsR(R6CoI12)2 and (CeI)0.26(Ce6MnI9)2.
- The crystal structures were solved, revealing specific space groups and lattice parameters.
- Magnetic susceptibility data for CsGd(Gd6CoI12)2 indicated strong intracluster ferromagnetic coupling and intercluster antiferromagnetic coupling.
Conclusions:
- The synthesis and characterization of these novel lanthanide cluster compounds expand the known structural diversity in lanthanide chemistry.
- The observed magnetic coupling behaviors highlight the potential for designing materials with specific magnetic properties.
Related Concept Videos
Coordination Number and Geometry
Metallic Solids
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability. Many...
Ionic Crystal Structures
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
Electron Configuration of Multielectron Atoms
Structural Isomerism
Isomers are different chemical species that have the same chemical formula. Structural isomerism of coordination compounds can be divided into two subcategories, the linkage isomers and coordination-sphere isomers.
Linkage isomers occur when the coordination compound contains a ligand that can bind to the transition metal center through two different atoms. For example, the CN− ligand can bind through the carbon atom or through the nitrogen atom. Similarly, SCN− can be...
Radicals: Electronic Structure and Geometry
Accordingly, the structure of a trivalent radical lies between the geometries of carbocations and carbanions. An sp2-hybridized carbocation is trigonal planar, while an sp3-hybridized carbanion is trigonal pyramidal. Here, the difference in geometry is...

