Anionic Bismuth-Oxido Carboxylate Clusters with Transition Metal Countercations

Area of Science:

• Inorganic Chemistry
• Materials Science
• Coordination Chemistry

Background:

• Bismuth-oxido clusters are an emerging class of compounds with potential applications in catalysis and materials science.
• The synthesis of anionic bismuth-oxido clusters, particularly those with transition metal countercations, remains underexplored.

Purpose of the Study:

• To synthesize and characterize novel anionic bismuth-oxido clusters.
• To investigate the structural diversity of bismuth-oxido clusters, including Bi₆O₈ and Bi₄O₂ cores.
• To explore the use of transition metal countercations in stabilizing these anionic clusters.

Main Methods:

• Single crystal X-ray crystallography for structural determination.
• Elemental analysis for compositional verification.
• Synthesis of novel coordination compounds.

Main Results:

• Six new anionic bismuth-oxido clusters were successfully prepared, including two Bi₆O₈ clusters with octahedral cores and four Bi₄O₂ clusters.
• The Bi₆O₈ anion exhibits a high-symmetry octahedron.
• Two Bi₄O₂ clusters form 1D polymeric structures through bridging carboxylate ligands.
• This study reports the first anionic bismuth-oxido clusters with transition metal countercations.

Conclusions:

• The successful synthesis of these novel anionic bismuth-oxido clusters expands the known structural diversity of such compounds.
• The incorporation of transition metal countercations offers new avenues for stabilizing and functionalizing bismuth-oxido clusters.
• The observed 1D polymeric structures highlight the potential for designing extended materials based on these clusters.