Altering the spectroscopy, electronic structure, and bonding of organometallic curium(III) upon coordination of 4,4'-bipyridine.

Autor: Long BN; Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, FL, 32306, USA., Beltrán-Leíva MJ; Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, FL, 32306, USA., Sperling JM; Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, FL, 32306, USA., Poe TN; Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, FL, 32306, USA., Celis-Barros C; Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, FL, 32306, USA. ccelisbarros@mines.edu.; Department of Chemistry and Nuclear Science & Engineering Center, Colorado School of Mines, Golden, CO, 80401, USA. ccelisbarros@mines.edu., Albrecht-Schönzart TE; Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, FL, 32306, USA. talbrechtschoenzart@gmail.com.; Department of Chemistry and Nuclear Science & Engineering Center, Colorado School of Mines, Golden, CO, 80401, USA. talbrechtschoenzart@gmail.com.
Jazyk: angličtina
Zdroj: Nature communications [Nat Commun] 2023 Jun 24; Vol. 14 (1), pp. 3774. Date of Electronic Publication: 2023 Jun 24.
DOI: 10.1038/s41467-023-39481-7
Abstrakt: Structural and electronic characterization of (Cp' 3 Cm) 2 (μ-4,4'-bpy) (Cp' = trimethylsilylcyclopentadienyl, 4,4'-bpy = 4,4'-bipyridine) is reported and provides a rare example of curium-carbon bonding. Cp' 3 Cm displays unexpectedly low energy emission that is quenched upon coordination by 4,4'-bipyridine. Electronic structure calculations on Cp' 3 Cm and (Cp' 3 Cm) 2 (μ-4,4'-bpy) rule out significant differences in the emissive state, rendering 4,4'-bipyridine as the primary quenching agent. Comparisons of (Cp' 3 Cm) 2 (μ-4,4'-bpy) with its samarium and gadolinium analogues reveal atypical bonding patterns and electronic features that offer insights into bonding between carbon with f-block metal ions. Here we show the structural characterization of a curium-carbon bond, in addition to the unique electronic properties never before observed in a curium compound.
(© 2023. The Author(s).)
Databáze: MEDLINE
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