## Abstract The ^1^H n.m.r. spectra of eleven anilides of 6‐methyl‐picolinic acid __N__‐oxide in chloroform were obtained. The influence of temperature, concentration and substituents on the chemical shifts of the NH protons was investigated. The structure of the anilides is discussed.
Studies on intramolecular hydrogen bonding of 1,1′-bis[N-formyl-N′-p-chlorophenylthiourea]ferrocene
✍ Scribed by Yao-feng Yuan; Su-ming Ye; Ling-yun Zhang; Bin Wang; Yu-ming Xu; Ji-tao Wang; Hong-gen Wang
- Book ID
- 108328465
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- English
- Weight
- 297 KB
- Volume
- 256
- Category
- Article
- ISSN
- 0020-1693
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## Abstract The ^1^H NMR spectra of seven __N__‐(pyridyl)amides of 6‐methylpicolinic acid __N__‐oxide in chloroform were obtained. The influence on the chemical shifts of the NH protons of temperature, concentration and the CH~3~ substituent in the pyridine ring was studied. The NH protons were f
## Abstract The ^1^H NMR spectra of perchlorates of __N__‐(pyridyl)amides of 6‐methylpicolinic acid __N__‐oxide (PYAP) in CD~3~CN at 100 MHz show two proton signals belonging to two distinct intramolecular hydrogen bonds. The position of these signals is independent of concentration and temperature