✦ LIBER ✦

The ditropylium dication

✍ Scribed by I.S. Akhrem; E.I. Fedin; B.A. Kvasov; M.E. Vol'pin

Book ID: 104240924
Publisher: Elsevier Science
Year: 1967
Tongue: French
Weight: 314 KB
Volume: 8
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(01)89658-1

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✦ Synopsis

In recent years the synthesis and properties of dl-and polycarbonium ions have been the subject of msny investigations I-=. The di-and tri-tropylium cations with the seven-membered r-s separated by a benzene rin@; have recently bean obtained by Murray end Caplen 4;5 .

We now report the synthesis of the ditropylium dication (I) in which the two positively charged rin&e are directly bonded together.

A salt of dication I was obtained by heating ditropyl with a four-fold excess of phosphorus pentachloride in dry carbon tetrachloride for 30 min.

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