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

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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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.",

keywords = "phosphorus ylides, X-ray structure, C-13 NMR spectra, delocalisation, cyclic ylides",

author = "Aitken, \{Robert Alan\} and EN Kozminykh and VO Kozminykh and Philip Lightfoot",

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AU - Kozminykh, VO

AU - Lightfoot, Philip

N1 - Phosphorus Sulfur Silicon Relat Elem

PY - 1998/3

Y1 - 1998/3

N2 - 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.

AB - 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.

KW - phosphorus ylides

KW - X-ray structure

KW - C-13 NMR spectra

KW - delocalisation

KW - cyclic ylides

UR - https://www.scopus.com/pages/publications/0032237499

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DO - 10.1080/10426509808545489

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SN - 1042-6507

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JO - Phosphorus, Sulfur, and Silicon and the Related Elements

JF - Phosphorus, Sulfur, and Silicon and the Related Elements

IS - 1

ER -

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

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