Affiliation:
1. Pacific Northwest National Laboratory 902 Battelle Boulevard Richland WA 99354 USA
2. Department of Fundamental Chemistry Institute of Chemistry University of São Paulo Av. Prof. Lineu Prestes 748 São Paulo 05508-000 Brazil
3. Department of Chemistry University at Buffalo State University of New York Buffalo NY 14260-3000 USA
Abstract
AbstractWe report the structural, vibrational, and optical properties of americium formate (Am(CHO2)3) crystals synthesized via the in situ hydrolysis of dimethylformamide (DMF). The coordination polymer features Am3+ ions linked by formate ligands into a three‐dimensional network that is isomorphous to several lanthanide analogs, (e. g., Eu3+, Nd3+, Tb3+). Structure determination revealed a nine‐coordinate Am3+ metal center that features a unique local C3v 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−O<Eu−O<Am−O. The optical properties were probed using diffuse reflectance and photoluminescence spectroscopies. Notably, the rarely reported 5D1′→7F0′ emission band is observed and dominates the emission spectrum. This behavior is unusual and is attributed to the C3v coordination environment of the metal center.
Funder
Basic Energy Sciences
Fundação de Amparo à Pesquisa do Estado de São Paulo
Subject
General Chemistry,Catalysis,Organic Chemistry
Cited by
1 articles.
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