Reducing-difference infrared spectral analysis of cis- and trans-configurated lactams

被引：9

作者：

Arnaudov, MG ^{[1
]}

Ivanova, BB ^{[1
]}

Todorov, ST ^{[1
]}

Zareva, SI ^{[1
]}

机构：

[1] Univ Sofia, Dept Chem, Sofia 1164, Bulgaria

来源：

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2006年 / 63卷 / 02期

关键词：

difference IR-spectral analysis; lactams; cis- and trans-conformers;

D O I：

10.1016/j.saa.2005.05.035

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

The conventional (non-polarized) and linear-polarized IR-spectra of 2-pyrrolidone and laurolactam as typical representatives of lactams with cis- and trans-amide configuration, respectively, were studied by means of difference IR-spectroscopy. The application of this method to treatment of the non-polarized IR-spectra permits additional conclusions about the likely self-associates of these compounds dissolved in aprotic solvents. By means of the difference linear-dichroic IR-spectroscopy, a more precise assignment of the characteristic bands of the lactam cis- and trans-peptide forms as well as their stereo structures were accomplished. A comparative analysis with the linear-dichroic IR-spectra of epsilon-caprolactam and caprylolactam, as similar compounds, with cis- and trans-con formation, respectively, was also carried out. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：491 / 500

页数：10

共 29 条

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