SOLVATION STRUCTURE OF DIVALENT TRANSITION-METAL IONS IN N,N-DIMETHYLFORMAMIDE AND N,N-DIMETHYLACETAMIDE

被引：78

作者：

OZUTSUMI, K ^{[1
]}

KOIDE, M ^{[1
]}

SUZUKI, H ^{[1
]}

ISHIGURO, S ^{[1
]}

机构：

[1] TOKYO INST TECHNOL NAGATSUTA,DEPT ELECTR CHEM,MIDORI KU,YOKOHAMA 227,JAPAN

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1993年 / 97卷 / 02期

关键词：

D O I：

10.1021/j100104a037

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The solvation structure of divalent transition-metal ions, manganese(II), iron(II), cobalt(II), nickel(II), copper-(II), and zinc(II), in N,N-dimethylformamide (DMF) and NN-dimethylacetamide (DMA) has been studied by the EXAFS (extended X-ray absorption fine structure) method. All the metal ions examined show the coordination number n = 6, suggesting a six-coordinate octahedral structure in DMF. The manganese(II), cobalt(II), nickel(II), and copper(II) ions also show n = 6 in DMA as well as in DMF. However, the coordination number of 4.6 is revealed for the zinc(II) ion in DMA, which is significantly smaller, suggesting that a solvation equilibrium, [Zn(dma)4]2+ + 2dma = [Zn(dma)6]2+, is established in the solution.

引用

页码：500 / 502

页数：3

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