N-15 AND C-13 NMR-STUDY OF ACYLATED HYDRAZINES - THE INSTABILITY OF TRIFLUOROACETHYDRAZIDE IN THE SOLID-STATE

被引：24

作者：

FRITZ, H ^{[1
]}

KRISTINSSON, H ^{[1
]}

MOLLENKOPF, M ^{[1
]}

WINKLER, T ^{[1
]}

机构：

[1] CIBA GEIGY AG,CH-4002 BASEL,SWITZERLAND

来源：

MAGNETIC RESONANCE IN CHEMISTRY | 1990年 / 28卷 / 04期

关键词：

!sup]13[!/sup]C–[!sup]1[!/sup]H coupling constants; !sup]15[!/sup]N NMR; !sup]15[!/sup]N‐[!sup]1[!/sup]H coupling constants; Hydrazides; Rotamer distribution;

D O I：

10.1002/mrc.1260280410

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Trifluoroacethydrazide is unstable even in the solid state with respect to hydrazonium N,N′‐ditrifluoroacetyl hydrazinate, as shown by 15N and 13C NMR spectroscopy. The 1H, 13C and 15N NMR data and rotamer distributions of formyl‐, acet‐ and trifluoroacet‐hydrazide and of N,N′‐diformyl‐, N,N′‐diacetyl‐ and N,N′‐ditrifluoroacetyl‐hydrazine are reported and compared with the results of earlier investigations. A conformational dependence is observed for 1J(NH) and 2J(NH) in the formylhydrazides and of 1J(NH), 2J(NH) 3J(NH) in the N,N′‐diformylhydrazines. The conformational dependence of 2J(CH) in formamide, reported in the literature, however, could not be confirmed. Copyright © 1990 John Wiley & Sons, Ltd.

引用

页码：331 / 336

页数：6

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