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

Arnaudov MG; Ivanova BB; Todorov ST; Zareva SI

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

机译：顺式和反式内酰胺的差示红外光谱分析

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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.

机译：通过差示红外光谱研究了2-吡咯烷酮和月桂内酰胺分别作为具有内酰胺和顺酰胺构型的内酰胺的典型代表的常规（非偏振）和线性偏振红外光谱。该方法在非偏振红外光谱处理中的应用，可以得出关于这些化合物溶解在非质子溶剂中的可能自缔合的其他结论。通过线性二色差红外光谱，可以更精确地分配内酰胺顺式和反式肽形式的特征谱带以及它们的立体结构。还对ε-己内酰胺和辛内酰胺作为类似化合物分别以顺式和反式构象形成的线性二向色红外光谱进行了比较分析。（c）2005 Elsevier B.V.保留所有权利。

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《Spectrochimica acta, Part A. Molecular and biomolecular spectroscopy》 |2006年第2期|共10页
作者
Arnaudov MG; Ivanova BB; Todorov ST; Zareva SI;
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正文语种 eng
中图分类分析化学;
关键词
difference IR-spectral analysis; lactams; cis- and trans-conformers; MEDIUM-RING COMPOUNDS; SECONDARY AMIDES; SELF-ASSOCIATION; AMINO-ACIDS; SOLID-STATE; IR; 4-AMINOPYRIDINE; SAUREAMIDGRUPPE; CONFORMATION; CAPROLACTAM;

机译：差异红外光谱分析;内酰胺类;顺式和反式顺式异构体;中环化合物;二次酰胺;自缔合;氨基酸;固态;红外光谱;4-氨基吡啶;SAUREAMIDGRUPPE;构象;己内酰胺;

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1. Reducing-difference infrared spectral analysis of cis- and trans-configurated lactams [J] . Arnaudov MG, Ivanova BB, Todorov ST, Spectrochimica acta, Part A. Molecular and biomolecular spectroscopy . 2006,第2期

机译：顺式和反式内酰胺的差示红外光谱分析
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机译：集成的可见光和近红外，短波红外和长波红外全光谱高光谱数据分析，可进行地质测绘

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

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