Coordination trends in alkali metal crown ether uranyl halide complexes:: The series [A(Crown)]2[UO2X4] where A = Li, Na, K and X = Cl, Br

被引：84

作者：

Danis, JA

Lin, MR

Scott, BL

Eichhorn, BW

Runde, WH

机构：

[1] Univ Calif Los Alamos Natl Lab, Div Environm Sci, Los Alamos, NM 87545 USA

[2] Univ Calif Los Alamos Natl Lab, Div Chem, Los Alamos, NM 87545 USA

[3] Univ Maryland, Dept Chem & Biochem, College Pk, MD 20742 USA

来源：

INORGANIC CHEMISTRY | 2001年 / 40卷 / 14期

关键词：

D O I：

10.1021/ic0011056

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

UO2(C2H3O2)(2). 2H(2)O reacts with AX or A(C2H3O2 or ClO4) (where A = Li, Na, K; X Cl; Br) and crown ethers in HCl or HBr aqueous solutions to give the sandwich-type compounds [K(18-crown-6)](2)[UO2Cl4] (1), [K(18-crown-6)](2)[UO2Br4] (2), [Na(15-crown-5)](2)[UO2Cl4] (3), [Na(15-crown-5)](2)[UO2Br4] (4), [Li(12-crown-4)](2)[UO2Cl4] (5), and [Li(12-crown-4)](2)[UO2Br4] (6). The compounds have been characterized by single-crystal X-ray diffraction, powder diffraction, elemental analysis, IR, and Raman spectroscopy. The [UO2X4](2-) ions coordinate to two [A(crown)](+) cations through the four halides only (2), through two halides only (3), through the two uranyl oxygens and two halides (3, 4), or through the two uranyl oxygen atoms only (5, 6). Raman spectra reveal v(U-O) values that correlate with expected trends. The structural trends are discussed within the context of classical principles of hard-soft acid-base theory.

引用

页码：3389 / 3394

页数：6

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