Insight into the Structural and Emissive Behavior of a Three-Dimensional Americium(III) Formate Coordination Polymer.

Autor: Nicholas AD; Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, WA, 99354, USA., Arteaga A; Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, WA, 99354, USA., Ducati LC; Department of Fundamental Chemistry Institute of Chemistry, University of São Paulo, Av. Prof. Lineu Prestes 748, São Paulo, 05508-000, Brazil., Buck EC; Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, WA, 99354, USA., Autschbach J; Department of Chemistry, University at Buffalo State University of New York, Buffalo, NY, 14260-3000, USA., Surbella RG 3rd; Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, WA, 99354, USA.
Jazyk: angličtina
Zdroj: Chemistry (Weinheim an der Bergstrasse, Germany) [Chemistry] 2023 Jul 20; Vol. 29 (41), pp. e202300077. Date of Electronic Publication: 2023 Jun 13.
DOI: 10.1002/chem.202300077
Abstrakt: We report the structural, vibrational, and optical properties of americium formate (Am(CHO 2 ) 3 ) crystals synthesized via the in situ hydrolysis of dimethylformamide (DMF). The coordination polymer features Am 3+ ions linked by formate ligands into a three-dimensional network that is isomorphous to several lanthanide analogs, (e. g., Eu 3+ , Nd 3+ , Tb 3+ ). Structure determination revealed a nine-coordinate Am 3+ metal center that features a unique local C 3v symmetry. The metal-ligand bonding interactions were investigated by vibrational spectroscopy, natural localized molecular orbital calculations, and the quantum theory of atoms in molecules. The results paint a predominantly ionic bond picture and suggest the metal-oxygen bonds increase in strength from Nd-O5 D 1' → 7 F 0' emission band is observed and dominates the emission spectrum. This behavior is unusual and is attributed to the C 3v coordination environment of the metal center.
(© 2023 Battelle Memorial Institute and The Authors. Chemistry - A European Journal published by Wiley-VCH GmbH.)
Databáze: MEDLINE
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