Oxygen‐17 and carbon‐13 NMR studies of diarylketenes

Giovanni Cerioni; Antonio Plumitallo; Joseph Frey; Zvi Rappoport

doi:10.1002/mrc.1260330809

Oxygen‐17 and carbon‐13 NMR studies of diarylketenes

Giovanni Cerioni
, Antonio Plumitallo
, Joseph Frey
, Zvi Rappoport

University of Cagliari
Hebrew University of Jerusalem

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

Natural abundance ¹⁷O and ¹³C NMR spectra for eleven diarylketenes are reported. ¹⁷O 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.

Original language	English
Pages (from-to)	669-673
Number of pages	5
Journal	Magnetic Resonance in Chemistry
Volume	33
Issue number	8
DOIs	https://doi.org/10.1002/mrc.1260330809
State	Published - Aug 1995
Externally published	Yes

Keywords

NMR
buttressing effect
cylindrical symmetry
diarylketenes
natural abundance O NMR

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10.1002/mrc.1260330809

Cite this

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abstract = "Natural abundance 17O and 13C NMR spectra for eleven diarylketenes are reported. 17O 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.",

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author = "Giovanni Cerioni and Antonio Plumitallo and Joseph Frey and Zvi Rappoport",

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AU - Frey, Joseph

AU - Rappoport, Zvi

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Y1 - 1995/8

N2 - Natural abundance 17O and 13C NMR spectra for eleven diarylketenes are reported. 17O 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.

AB - Natural abundance 17O and 13C NMR spectra for eleven diarylketenes are reported. 17O 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.

KW - NMR

KW - buttressing effect

KW - cylindrical symmetry

KW - diarylketenes

KW - natural abundance O NMR

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ER -

Oxygen‐17 and carbon‐13 NMR studies of diarylketenes

Abstract

Keywords

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