FOURIER TRANSFORM-INFRARED SPECTROSCOPIC STUDY OF URACIL DERIVATIVES AND THEIR HYDROGEN-BONDED COMPLEXES WITH PROTON DONORS .1. MONOMER INFRARED ABSORPTIONS OF URACIL AND SOME METHYLATED URACILS IN ARGON MATRICES

被引：130

作者：

GRAINDOURZE, M ^{[1
]}

SMETS, J ^{[1
]}

ZEEGERSHUYSKENS, T ^{[1
]}

MAES, G ^{[1
]}

机构：

[1] CATHOLIC UNIV LOUVAIN,DEPT CHEM,CELESTIJNENLAAN 200 F,B-3030 HEVERLE,BELGIUM

来源：

JOURNAL OF MOLECULAR STRUCTURE | 1990年 / 222卷 / 3-4期

关键词：

D O I：

10.1016/0022-2860(90)85045-K

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：

As a precursor to the study of hydrogen-bonded complexes of uracils, the vibrational spectra of uracil, 1-CH3-uracil, 3-CH3-uracil, 5-CH3-uracil and 1,3-diCH3-uracil isolated in low-temperature argon matrices were investigated using Fourier transform-infrared (FT-IR) spectroscopy. All the bases occur as keto tautomers in the low temperature inert environment. Comparison of experimental absorptions with literature data, including recent ab initio predictions, allows a consistent set of monomer frequencies to be established for all the studied uracils. This set is somewhat different from earlier assignments and methylation of uracil has a rather limited effect on vibrational modes which are sensitive to hydrogen bonding. © 1990.

引用

页码：345 / 364

页数：20

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