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TL-205 NMR-SPECTROSCOPY - SOLVATION OF TI(I) ION IN BINARY SOLVENT SYSTEMS WATER-PYRIDINE, WATER-DIMETHYL SULFOXIDE, AND PYRIDINE-DIMETHYL SULFOXIDE

被引：11
作者：
BRIGGS, RW
HINTON, JF
机构：
[1] Department of Chemistry, University of Arkansas, Fayetteville, 72701, Arkansas
来源：
JOURNAL OF SOLUTION CHEMISTRY | 1978年 / 7卷 / 01期
关键词：
dimethyl sulfoxide; pyridine; Solvation; thallium-205 NMR spectroscopy; water;
D O I：
10.1007/BF00654213
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：
Solvation of the Tl+ ion in 0.005 M solutions of water/pyridine, water/dimethyl sulfoxide, and pyridine/dimethyl sulfoxide was studied with205Tl NMR spectroscopy as a function of solvent composition and anion (NO3- and ClO4t-). Dimethyl sulfoxide solvated the Tl+ ion more strongly than did pyridine, despite the latter's greater electron-donating ability. This was explained in terms of structural effects, which were found to be large for all three binary solvent systems. Ion pairing was evident in the DMSO/pyridine and water/pyridine solvent systems in which the pyridine mole fraction was greater than 0.8. © 1978 Plenum Publishing Corporation.
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页码：1 / 8
页数：8
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