| Texto completo | |
| Autor(es): |
Nicholas, Aaron D.
;
Arteaga, Ana
;
Ducati, Lucas C.
;
Buck, Edgar C.
;
Autschbach, Jochen
;
Surbella III, Robert G.
Número total de Autores: 6
|
| Tipo de documento: | Artigo Científico |
| Fonte: | CHEMISTRY-A EUROPEAN JOURNAL; v. N/A, p. 11-pg., 2023-06-13. |
| Resumo | |
We 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 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-O<Eu-O<Am-O. The optical properties were probed using diffuse reflectance and photoluminescence spectroscopies. Notably, the rarely reported D-5(1 ')-> F-7(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. (AU) | |
| Processo FAPESP: | 17/17750-3 - Efeito do Solvente em Parâmetros Espectroscópicos de RMN por Dinâmica Molecular ab initio |
| Beneficiário: | Lucas Colucci Ducati |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |