A New Route to the Phosphazene Polymerization Precursors, Cl3PNSiMe3 and (NPCl2)3

An improved synthesis of the phosphazene polymerization precursors, hexachlorocyclotriphosphazene, (NPCl2)3 (1), and Cl3PNSiMe3 (2) is reported. The addition of PCl5 to N(SiMe3)3 in methylene chloride at 40 °C produced a mixture of phosphazenes which contained 76% of 1. However, the addition of N(S...

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Bibliographic Details
Published in:Inorganic chemistry 1999-01, Vol.38 (2), p.280-283
Main Authors: Allcock, Harry R, Crane, Chester A, Morrissey, Christopher T, Olshavsky, Michael A
Format: Article
Language:English
Online Access:Get full text
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Summary:An improved synthesis of the phosphazene polymerization precursors, hexachlorocyclotriphosphazene, (NPCl2)3 (1), and Cl3PNSiMe3 (2) is reported. The addition of PCl5 to N(SiMe3)3 in methylene chloride at 40 °C produced a mixture of phosphazenes which contained 76% of 1. However, the addition of N(SiMe3)3 to PCl5 in methylene chloride at 0 °C, followed by the addition of hexane, provided 2 in 40% yield. The mechanism of the reaction is discussed.
ISSN:0020-1669
1520-510X
DOI:10.1021/ic980534p