FT-IR studies of molecular interactions in formamide-methanol mixtures

被引：10

作者：

Stangret, Janusz ^{[1
]}

Kamienska-Piotrowicz, Ewa ^{[1
]}

Laskowska, Kamila ^{[1
]}

机构：

[1] Gdansk Univ Technol, Fac Chem, Dept Phys Chem, PL-80952 Gdansk, Poland

来源：

VIBRATIONAL SPECTROSCOPY | 2007年 / 44卷 / 02期

关键词：

formamide-methanol mixtures; FT-IR spectra; factor analysis; difference spectra method; hydrogen-bonded complexes; AQUEOUS-SOLUTIONS; HDO SPECTRA; WATER; ENTHALPIES; SOLVATION; COMPLEXES; HYDRATION; SPECTROSCOPY; SOLVENT; ION;

D O I：

10.1016/j.vibspec.2007.02.003

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Fr-IR spectra of formamide (FA)-methanol (MeOH) mixtures have been measured by ATR technique. Factor analysis applied to the spectra has shown two kinds of intermolecular complexes differing in a manner of polarization of component molecules. The composition of the complexes changes monotonically with the composition of the mixtures. The spectra in the CO stretching region have been analyzed separately using both: the factor analysis and the difference spectra method. Four different environments of carbonyl group of formamide has been revealed over the whole range of the mixture composition. The mean number of formamide molecules disturbed by one methanol molecule via carbonyl group in the formamide-rich region has been found as equal to 1.5. Presumable structures for the molecular complexes have been proposed to explain the results of the analyses. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：324 / 330

页数：7

共 23 条

[1] THEORETICAL-STUDIES OF HYDROGEN-BONDED COMPLEXES USING SEMIEMPIRICAL METHODS [J].