Composition of heteroassociates formed in a binary liquid system HF-Et2O

被引：5
|
作者：
Yukhnevich, G. V. [1 ]
Tarakanova, E. G. [1 ]
Kepman, A. V. [2 ]
Bykov, I. V. [3 ]
机构：
[1] Russian Acad Sci, NS Kurnakov Gen & Inorgan Chem Inst, Moscow 119991, Russia
[2] Moscow MV Lomonosov State Univ, Dept Chem, Moscow 119992, Russia
[3] Russian Acad Sci, VI Vernadskii Inst Geochem & Analyt Chem, Moscow 119991, Russia
来源：
RUSSIAN CHEMICAL BULLETIN | 2008年 / 57卷 / 09期
基金：
俄罗斯基础研究基金会;
关键词：
binary liquid system; IR spectroscopy; solution density; hydrogen bond; heteroassociates; hydrogen fluoride; diethyl ether;
D O I：
10.1007/s11172-008-0252-z
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
IR spectra and densities of solutions in a binary liquid system (BLS) HF-Et2O were measured for the first time for the molar ratios of the components ranging from 1: 12 to 14: 1 and 31: 1, respectively. An analysis of the concentration dependences of the normalized (to the total number of moles of the BLS components in 1 L) absorbance and excess density of the studied solutions revealed that they contained heteroassociates with stoichiometric ratios of the molecules of 1: 2, 2: 1, 4: 1, and 11-12: 1. The concentration range in which each associate is formed in the binary mixture HF-Et2O was estimated for all the associates. The results obtained were compared with the data on the HF: Solv ratios (Solv is solvent) in molecular complexes that prevail in the seven BLS HF-organic solvent studied earlier.
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页码：1867 / 1873
页数：7
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