Intramolecular hydrogen bonds in N-oxides of Schiff bases

被引：5
|
作者：
Dziembowska, T
Majewski, E
Rozwadowski, Z
Brzezinski, B
机构：
[1] ADAM MICKIEWICZ UNIV POZNAN,FAC CHEM,PL-60780 POZNAN,POLAND
[2] TECH UNIV SZCZECIN,INST FUNDAMENTAL CHEM,PL-71065 SZCZECIN,POLAND
来源：
JOURNAL OF MOLECULAR STRUCTURE | 1997年 / 403卷 / 03期
关键词：
N-oxide of Schiff base; intramolecular hydrogen bond; proton transfer; H-1 and C-13 NMR; FTIR spectroscopy;
D O I：
10.1016/S0022-2860(96)09414-8
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：
Three N-oxides of Schiff bases (nitrones) with intramolecular hydrogen bonds were synthesized and studied by FTIR as well as H-1 and C-13 NMR methods. In the -O-H ... ON reversible arrow =O ... H-ON intramolecular hydrogen bonds the protons fluctuate, whereas the weight of the =O ... H-ON structure is low. In the FTIR spectra of these compounds very weak continua were found and explained by an electronically conjugation between donor and acceptor groups in the intramolecular hydrogen bond. Such bonds show almost no Zundel polarizability. (C) 1997 Elsevier Science B.V.
引用
收藏
页码：183 / 187
页数：5
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