New thorium(iv)-arsonates with a [Th8O13]6+ octanuclear core

Area of Science:

• Inorganic Chemistry
• Materials Science
• Coordination Chemistry

Background:

• Thorium-based clusters are of interest for their unique structural motifs and potential applications.
• Developing novel coordination compounds with specific functional properties remains a key research area.

Purpose of the Study:

• To synthesize and characterize new octanuclear thorium(iv) arsonate complexes.
• To investigate the structural diversity and luminescent properties of these novel clusters.

Main Methods:

• Hydrothermal synthesis was employed to prepare the thorium(iv) arsonate complexes.
• Structural characterization was performed using X-ray diffraction.
• Photoluminescence spectroscopy was used to study the emission properties.

Main Results:

• Three new octanuclear Th(iv) arsonate complexes were successfully synthesized, featuring [Th(8)O(13)](6+) cores.
• The complexes exhibit diverse structural dimensionality: 0D clusters, 1D chains, and 2D layers.
• Compounds 2 and 3 show broad green light emission attributed to ligand-to-metal charge transfer (LMCT).

Conclusions:

• The study presents novel Th(iv) arsonate clusters with tunable structural dimensionality.
• The observed green luminescence suggests potential applications in optical materials.
• The findings contribute to the understanding of polynuclear thorium cluster chemistry.