O-17 AND C-13 NMR-STUDIES OF DIARYLKETENES

被引：6

作者：

CERIONI, G

PLUMITALLO, A

FREY, J

RAPPOPORT, Z

机构：

[1] UNIV CAGLIARI,DIPARTIMENTO FARM CHIM TECNOL,I-09124 CAGLIARI,ITALY

[2] HEBREW UNIV JERUSALEM,DEPT ORGAN CHEM,IL-91904 JERUSALEM,ISRAEL

来源：

MAGNETIC RESONANCE IN CHEMISTRY | 1995年 / 33卷 / 08期

关键词：

NMR; NATURAL ABUNDANCE O-17 NMR; DIARYLKETENES; BUTTRESSING EFFECT; CYLINDRICAL SYMMETRY;

D O I：

10.1002/mrc.1260330809

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Natural abundance O-17 and C-13 NMR spectra for eleven diarylketenes are reported. O-17 shifts show invariance with para substitution and a shielding due to ortho substitution. A buttressing effect is observed for bis(2,3,4,5,6-pentamethylphenyl)ketene. A comparison between ketenes and isocyanates is made. The importance of cylindrical symmetry for half-height linewidths is discussed.

引用

页码：669 / 673

页数：5

共 49 条

[31]

LEVY GC, 1980, CARBON 13 NUCL MAGNE, pCH5

[32]

LEVY GC, 1980, CARBON 13 NUCLEAR MA, P31

[33] CARBON-13 MAGNETIC RESONANCE STUDY OF ALKYL CYANIDES ISOCYANIDES ISOCYANATES AND ISOTHIOCYANATES [J].