✦ LIBER ✦

Three-bond 31P31P coupling and 31P chemical shift effects in dimers of phospholium salts and phosphole oxides

✍ Scribed by Louis D. Quin; Keith A. Mesch

Publisher: John Wiley and Sons
Year: 1979
Tongue: English
Weight: 197 KB
Volume: 12
Category: Article
ISSN: 0749-1581
DOI: 10.1002/mrc.1270120713

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✦ Synopsis

Abstract

The chemically nonequivalent ^31^P nuclei of the Diels‐Alder dimers of phospholium ions and phosphole oxides are coupled through three bonds by as much as 35–45 Hz. The chemical shift for a phosphorus atom in the 2‐phospholene moiety falls in the expected range; the shift for the constricted atom bridging the 6‐membered ring is far downfield, making Δδ as much as 43.5 ppm for one phospholium ion dimer.

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