Solution and solid state structure of highly delocalised 5-triphenylphosphoranylidene-cyclopentene-3,4-diones

Robert Alan Aitken; EN Kozminykh; VO Kozminykh; Philip Lightfoot

doi:10.1080/10426509808545489

Solution and solid state structure of highly delocalised 5-triphenylphosphoranylidene-cyclopentene-3,4-diones

Robert Alan Aitken, EN Kozminykh, VO Kozminykh, Philip Lightfoot

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

5 Citations (Scopus)

Abstract

The fully assigned C-13 NMR spectra of the cyclic ylides 4 and 5 show that the C-1-C-2 bond is very strongly polarised consistent with substantial delocalisation of the ylide negative charge on to C-2. The X-ray structure of 5 confirms the occurrence of extensive delocalisation involving a significant contribution from up to six separate resonance forms.

Original language	English
Pages (from-to)	487-492
Number of pages	6
Journal	Phosphorus, Sulfur, and Silicon and the Related Elements
Volume	134
Issue number	1
DOIs	https://doi.org/10.1080/10426509808545489
Publication status	Published - Mar 1998

Keywords

phosphorus ylides
X-ray structure
C-13 NMR spectra
delocalisation
cyclic ylides

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10.1080/10426509808545489

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abstract = "The fully assigned C-13 NMR spectra of the cyclic ylides 4 and 5 show that the C-1-C-2 bond is very strongly polarised consistent with substantial delocalisation of the ylide negative charge on to C-2. The X-ray structure of 5 confirms the occurrence of extensive delocalisation involving a significant contribution from up to six separate resonance forms.",

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AU - Lightfoot, Philip

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KW - phosphorus ylides

KW - X-ray structure

KW - C-13 NMR spectra

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KW - cyclic ylides

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Solution and solid state structure of highly delocalised 5-triphenylphosphoranylidene-cyclopentene-3,4-diones

Abstract

Keywords

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