Stabilization of U(III) to Oxidation and Hydrolysis by Encapsulation Using 2.2.2-Cryptand,Inorganic Chemistry

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Stabilization of U(III) to Oxidation and Hydrolysis by Encapsulation Using 2.2.2-Cryptand
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2020-11-23 , DOI: 10.1021/acs.inorgchem.0c02286
Daniel N. Huh ₁ , Jeffrey M. Barlow ₁ , Sierra R. Ciccone ₁ , Joseph W. Ziller ₁ , Jenny Y. Yang ₁ , William J. Evans ₁

Affiliation

The electrochemical properties of U(III)-in-crypt (crypt = 2.2.2-cryptand) were examined in dimethylformamide (DMF) and acetonitrile (MeCN) to determine the oxidative stability offered by crypt as a ligand. Cyclic voltammetry revealed a U(III)/U(IV) irreversible oxidation at E_PA= −0.49 V (vs Fe(C₅H₅)₂^+/0) in DMF and at E_PA= −0.31 V (vs Fe(C₅H₅)₂^+/0) in MeCN. The electrochemistry of U(III)-in-crypt complexes in the presence of water was also examined. These studies are supported by crystallographically characterized examples of U(III)-in-crypt complexes as DMF, MeCN, and water adducts.

中文翻译：

通过使用2.2.2-Cryptand封装来稳定U（III）的氧化和水解

在二甲基甲酰胺（DMF）和乙腈（MeCN）中检查了隐窝U（III）（隐窝= 2.2.2-隐窝）的电化学性质，以确定隐窝作为配体提供的氧化稳定性。循环伏安法显示在DMF中E _PA = −0.49 V（vs Fe（C ₅ H ₅）₂^{+ / 0}）和E _PA = −0.31 V（vs Fe（v C ₅ H ₅）₂^{+ / 0}）。还检查了在水存在下U（III）-隐窝复合物的电化学。这些研究得到了隐秘的U（III）配合物如DMF，MeCN和水加合物的晶体学表征的支持。

更新日期：2020-12-07

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