First characterization of an uranium(III) complex with a carbonyl-containing ligand:: Syntheses and X-ray crystal structures of the homoleptic dimethylformamide complexes [M(dmf)n]I3 (M = Ce, Nd and n=8; M = La, Ce, U and n=9)

被引：22

作者：

Berthet, Jean-Claude ^{[1
]}

Thuery, Pierre ^{[1
]}

Ephritikhine, Michel ^{[1
]}

机构：

[1] CEA Saclay, CNRS,URA 331, DSM,DRECAM, Serv Chim Mol,Lab Claude Frejacques, F-91191 Gif Sur Yvette, France

来源：

POLYHEDRON | 2006年 / 25卷 / 07期

关键词：

uranium; lanthanides; dimethylformamide; cation; iodide; X-ray crystal structure;

D O I：

10.1016/j.poly.2005.11.010

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Solutions of the trivalent iodides LnI(3) and [UI3(py)(4)] in dimethylformamide (dmf) deposited crystals of the tricationic species [M(dmf)(n)]I-3 (M = Ce (1), Nd (2) and n = 8; M = La (3), Ce (4), U (5) and n = 9). The dmf ligands are labile and easily removed under vacuum affording solid samples of [MI3(dmf)(n)] compounds with varying numbers of coordinated dmf molecules (n = 2-6). The uranium derivative was oxidized into [U(dmf)(9)]I-4 in dmf at 110 degrees C. X-ray crystal structures of complexes 1-5 show the differences between the U-O and Ln-O distances to reflect the variation in the ionic radii of the metals, demonstrating the similar nature of the [M]-O=C interaction in these series of 4f- and 5f-elements. (C) 2005 Elsevier Ltd. All rights reserved.

引用

页码：1700 / 1706

页数：7

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