Influence of the phosphorus lone pair on coupling constants in vinylphosphines

Multinuclear NMR data are presented and discussed for a variety of vinylphosphines in which the vinyl group bears one, two or three substituents; these include organic and trimethylstannyl residues. The orientation of the phosphorus lone pair can be determined from two‐bond phosphorus‐carbon couplin...

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Veröffentlicht in:	Magnetic resonance in chemistry 1991-01, Vol.29 (1), p.78-82
Hauptverfasser:	Mitchell, Terence N., Heesche-Wagner, Kerstin, Belt, Heinz-Joachim
Format:	Artikel
Sprache:	eng
Schlagworte:	Atomic and molecular physics coupling constants Exact sciences and technology Molecular properties and interactions with photons NMR Nuclear resonance and relaxation phosphorus lone pair influence Physics vinylphosphines
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Beschreibung
Zusammenfassung:	Multinuclear NMR data are presented and discussed for a variety of vinylphosphines in which the vinyl group bears one, two or three substituents; these include organic and trimethylstannyl residues. The orientation of the phosphorus lone pair can be determined from two‐bond phosphorus‐carbon coupling constant values. The magnitudes of the 3J(PCCSn), 4J(PCCSnC) and 5J(PCCSnCH) coupling constants are clearly determined by a throughspace interaction when P and C are in a cis configuration.
ISSN:	0749-1581 1097-458X
DOI:	10.1002/mrc.1260290115