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Updated: Oct 7, 2025

Amide Coupling Reaction for the Synthesis of Bispyridine-based Ligands and Their Complexation to Platinum as Dinuclear Anticancer Agents
Published on: May 28, 2014
Cyclopentadienyl coordination induces unexpected ionic Am-N bonding in an americium bipyridyl complex
Brian N Long1, María J Beltrán-Leiva1, Cristian Celis-Barros1
1Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, FL, 32306, USA.
Abstract:
Variations in bonding between trivalent lanthanides and actinides is critical for reprocessing spent nuclear fuel. The ability to tune bonding and the coordination environment in these trivalent systems is a key factor in identifying a solution for separating lanthanides and actinides. Coordination of 4,4'-bipyridine (4,4'-bpy) and trimethylsilylcyclopentadienide (Cp') to americium introduces unexpectedly ionic Am-N bonding character and unique spectroscopic properties. Here we report the structural characterization of (Cp'3Am)2(μ - 4,4'-bpy) and its lanthanide analogue, (Cp'3Nd)2(μ - 4,4'-bpy), by single-crystal X-ray diffraction. Spectroscopic techniques in both solid and solution phase are performed in conjunction with theoretical calculations to probe the effects the unique coordination environment has on the electronic structure.
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