Extending the chemistry of the uranyl ion: Lewis acid coordination to a U=O oxygen

被引：143

作者：

Sarsfield, MJ ^{[1
]}

Helliwell, M

机构：

[1] Univ Manchester, Dept Chem, Ctr Radiochem Res, Manchester M13 9PL, Lancs, England

[2] Univ Manchester, Dept Chem, Manchester M13 9P, Lancs, England

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2004年 / 126卷 / 04期

关键词：

D O I：

10.1021/ja039101y

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Treatment of the thf adduct UO2(NCN)thf (NCN = [(Me3SiN)CPh(NSiMe3)]) (1) with 2 equiv of B(C6F5)3 provides UO{OB(C6F5)3}(NCN)2 (2) the first example of a neutral uranyl complex exhibiting Lewis basic behavior. The crystal structure of 2 shows a U=O-B interaction with an elongated U=O bond (1.898(3) Å). Raman spectroscopy suggests weakening of the O=U=O= bonding, giving the lowest reported symmetric stretching frequency for a monomeric uranyl complex, ν1 = 780 cm-1. The borane can be selectively removed using PMe3 to give the coordinatively unsaturated UO2(NCN)2 (3) or using tBuNC to provide UO2(CNBut)(NCN)2 (4), the first example of an isonitrile coordinated to uranium. Copyright © 2004 American Chemical Society.

引用

页码：1036 / 1037

页数：2

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