Cyclopolyphosphines

Date

1975-08

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Publisher

Texas Tech University

Abstract

The principle unanswered (questions in cyclopolyphosphine chemistry are: (1) What is the ring size of a particular cyclopolyphosphine in solution, and, (2) What factors determine the ring size? In order to answer these questions, the alkyl, perfluoroalkyl and aryl cyclopolyphosphines were observed by 31P NMR while decoupling all other nuclei. The three-membered rings should give AB^ spin systems, the fourand six-membered rings should give A. and A^ spin systems, respectively, and the five-membered rings should give AA'BB'C or ABODE systems (Chapter IV). In order to obtain additional information on the factors which govern ring size, an attempt was also made to try to prepare cyclopolyphosphine rings with mixed substituents.

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