Multiple Bonding in Lanthanides and Actinides: Direct Comparison of Covalency in Thorium(IV)- and Cerium(IV)-Imido Complexes

Autor:	Thibault Cheisson, Kyle D. Kersey, Nolwenn Mahieu, Patrick J. Carroll, Michael R. Gau, Alex McSkimming, Eric J. Schelter
Rok vydání:	2019
Předmět:	Thorium chemistry.chemical_element Ionic bonding General Chemistry Actinide 010402 general chemistry 01 natural sciences Biochemistry Multiple bonds Catalysis 0104 chemical sciences Cerium Crystallography Colloid and Surface Chemistry chemistry Covalent bond Isostructural
Zdroj:	Journal of the American Chemical Society. 141:9185-9190
ISSN:	1520-5126 0002-7863
DOI:	10.1021/jacs.9b04061
Popis:	A series of thorium(IV)-imido complexes was synthesized and characterized. Extensive experimental and computational comparisons with the isostructural cerium(IV)-imido complexes revealed a notably more covalent bonding arrangement for the Ce═N bond compared with the more ionic Th═N bond. The thorium-imido moieties were observed to be 3 orders of magnitude more basic than their cerium congeners. More generally, these results provide unique experimental evidence for the larger covalent character of 4f05d0 Ce(IV) multiple bonds compared to its 5f06d0 Th(IV) actinide congener.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::30e096ae972e0a799c1ea7ab533babaa https://doi.org/10.1021/jacs.9b04061 Zobrazit plný text záznamu