Issue 84, 2022

Synthesis and characterization of a bimetallic americium(iii) pyrithionate coordination complex

Abstract

The aqueous reaction of sodium pyrithione, (Na)mpo, with 243AmCl3·nH2O yields a dimerized complex, [243Am(mpo)2(μ-O-mpo)(H2O)]2·3H2O. This compound is compared with isostructural lanthanide pyrithionates, where dimerization across the 4f-block is observed to be dependent upon the size of the cation. Unlike in most reported Am(III) UV-visible absorption spectra, [243Am(mpo)2(μ-O-mpo)(H2O)]2·3H2O shows significant splitting in the fingerprint excitations. This is attributed to a unique ligand-field environment, where the Am–mpo bonds possess different bonding compared to the Nd(III) analog because of increasing covalent interactions.

Graphical abstract: Synthesis and characterization of a bimetallic americium(iii) pyrithionate coordination complex

Supplementary files

Article information

Article type
Communication
Submitted
14 Jun 2022
Accepted
15 Sep 2022
First published
15 Sep 2022

Chem. Commun., 2022,58, 11791-11794

Author version available

Synthesis and characterization of a bimetallic americium(III) pyrithionate coordination complex

Z. K. Huffman, J. M. Sperling, C. J. Windorff, B. N. Long, L. Cordova, H. Ramanantoanina, C. Celis-Barros and T. E. Albrecht-Schönzart, Chem. Commun., 2022, 58, 11791 DOI: 10.1039/D2CC03352F

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