Expanding Transuranium Organoactinide Chemistry: Synthesis and Characterization of (Cp'3M)2(μ-4,4'-bpy) (M = Ce, Np, Pu)

Brian N Long; Joseph M Sperling; Cory J Windorff; Zachary K Huffman; Thomas E Albrecht-Schönzart

doi:10.1021/acs.inorgchem.3c00217

Expanding Transuranium Organoactinide Chemistry: Synthesis and Characterization of (Cp'₃M)₂(μ-4,4'-bpy) (M = Ce, Np, Pu)

Inorg Chem. 2023 Apr 24;62(16):6368-6374. doi: 10.1021/acs.inorgchem.3c00217. Epub 2023 Apr 12.

Authors

Brian N Long¹, Joseph M Sperling¹, Cory J Windorff^{1

2}, Zachary K Huffman¹, Thomas E Albrecht-Schönzart³

Affiliations

¹ Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, Florida 32306, United States.
² Department of Chemistry and Biochemistry, New Mexico State University, MSC 3C, PO box 30001, Las Cruces, New Mexico 88003, United States.
³ Department of Chemistry and Nuclear Science & Engineering Center, Colorado School of Mines, Golden, Colorado 80401, United States.

PMID: 37043631
DOI: 10.1021/acs.inorgchem.3c00217

Abstract

Dinuclear, organometallic, transuranium compounds, (Cp'₃M)₂(μ-4,4'-bpy) (Cp'^- = trimethylsilylcyclopentadienide, 4,4'-bpy = 4,4'-bipyridine, M = Ce, Np, Pu), reported herein provide a rare opportunity to probe the nature of actinide-carbon bonding. Significant splitting of the f-f transitions results from the unusual coordination environment in these complexes and leads to electronic properties that are currently restricted to organoactinide systems. Structural and spectroscopic characterization in the solid state and in solution for (Cp'₃M)₂(μ-4,4'-bpy) (M = Np, Pu) are reported, and their structural metrics are compared to a cerium analogue.