Uranium( iv ) terminal hydrosulfido and sulfido complexes: insights into the nature of the uranium–sulfur bond - INSA Toulouse - Institut National des Sciences Appliquées de Toulouse Accéder directement au contenu
Article Dans Une Revue Chemical Science Année : 2016

Uranium( iv ) terminal hydrosulfido and sulfido complexes: insights into the nature of the uranium–sulfur bond

Résumé

Herein, we report the synthesis and characterization of a series of terminal uranium(IV) hydrosulfido and sulfido complexes, supported by the hexadentate, tacn-based ligand framework (Ad,Me ArO) 3 tacn 3À (¼ trianion of 1,4,7-tris(3-(1-adamantyl)-5-methyl-2-hydroxybenzyl)-1,4,7-triazacyclononane). The hydrosulfido complex [((Ad,Me ArO) 3 tacn)U-SH] (2) is obtained from the reaction of H 2 S with the uranium(III) starting material [((Ad,Me ArO) 3 tacn)U] (1) in THF. Subsequent deprotonation with potassium bis(trimethylsilyl)amide yields the mononuclear uranium(IV) sulfido species in good yields. With the aid of dibenzo-18-crown-6 and 2.2.2-cryptand, it was possible to isolate a terminal sulfido species, capped by the potassium counter ion, and a "free" terminal sulfido species with a well separated cation/anion pair. Spectroscopic and computational analyses provided insights into the nature of the uranium-sulfur bond in these complexes.

Domaines

Chimie
Fichier principal
Vignette du fichier
Uranium terminal hydrosulfido.pdf (1.06 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte
Loading...

Dates et versions

hal-01968915 , version 1 (03-01-2019)

Identifiants

Citer

Michael W Rosenzweig, Andreas Scheurer, Carlos A. Lamsfus, Frank Heinemann, Laurent Maron, et al.. Uranium( iv ) terminal hydrosulfido and sulfido complexes: insights into the nature of the uranium–sulfur bond. Chemical Science, 2016, 7 (9), pp.5857-5866. ⟨10.1039/c6sc00677a⟩. ⟨hal-01968915⟩
39 Consultations
72 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More