FAR-IR STUDY OF THE HYDROGEN-BOND VIBRATION OF INTRAMOLECULAR BONDS IN SUBSTITUTED 2-DIETHYLAMINOMETHYLPHENOL N-OXIDES, AS A FUNCTION OF THE PKA OF THE PHENOLIC GROUP

被引：9

作者：

BRZEZINSKI, B ^{[1
]}

RABOLD, A ^{[1
]}

ZUNDEL, G ^{[1
]}

机构：

[1] UNIV MUNICH,INST PHYS CHEM,D-80333 MUNICH,GERMANY

来源：

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS | 1994年 / 90卷 / 06期

关键词：

D O I：

10.1039/ft9949000843

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：

The intramolecular hydrogen-bond vibration in R-substituted 2-diethylaminomethylphenol N-oxides in the far-infrared region has been studied. With decreasing pK(a) value of the phenolic group this vibration shifts first towards higher and then towards lower wavenumbers. The proton is transferred within the OH...ON half arrow right over half arrow left O-...H+ON hydrogen bond with increasing acidity of the phenolic group. This bond is strongest for R = 4 -NO2, and the hydrogen bond vibration is very broad in this system. It has been found that the change of the position of the hydrogen bond vibration is independent of the mass of the substituents. All results in this work agree very well with results obtained for corresponding intermolecular hydrogen bonds.

引用

页码：843 / 844

页数：2

共 9 条

[1] PREPARATION AND NMR CHARACTERIZATION OF HYDROGEN-BONDING IN 2,6-BIS-(N,N-DIETHYLAMINOMETHYL-4R-PHENOLS AND 2,6-BIS-(N,N-DIETHYLAMINOMETHYL)-4R-PHENOLS [J].