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The identification of some novel four-membered ring cyclic triphosphenium ions in solution

✍ Scribed by Keith B. Dillon; Philippa K. Monks; Richard J. Olivey; Hans H. Karsch

Publisher
John Wiley and Sons
Year
2004
Tongue
English
Weight
79 KB
Volume
15
Category
Article
ISSN
1042-7163

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✦ Synopsis

Abstract

The first four‐membered ring cyclic triphosphenium ions with carbon substituents (methyl or cyclohexyl) on the outer phosphorus atoms have been identified in solution by ^31^P NMR spectroscopy. The cyclohexyl derivative in the presence of [SnCl~6~]^2βˆ’^ as counterion was stable enough for methylation by methyl triflate to be carried out. Β© 2004 Wiley Periodicals, Inc. Heteroatom Chem 15:464–467, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/hc.20043

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The preparation in solution of a number of cyclic triphosphenium ions and their identification by 31 P NMR spectroscopy are described; the crystal and molecular structure of the six-membered cationic ring (as its hexachlorostannate) has been determined.