Issue 5, 2004
From the journal:

Dalton Transactions

Steric control in the oligomerisation of phosphazane dimers; towards new phosphorus–nitrogenmacrocycles

Emma L. Doyle,a   Felipe García,a   Simon M. Humphrey,a   Richard A. Kowenicki,a   Lucía Riera,*a   Anthony D. Woodsa  and  Dominic S. Wright*a  

* Corresponding authors

a Chemistry Department,University of Cambridge, Lensfield Road, Cambridge, UK

Abstract

The reaction of [ClP(μ-NtBu)]2 (1) with H2O (1 : 2 equivalents) in the presence of excess Et3N gives the new chain compound [(μ-O){P(μ-NtBu)2P(H)[double bond, length as m-dash]O}2] (3), consisting of two P2N2 rings linked by a μ-O atom and terminating in PV(H)[double bond, length as m-dash]O groups. A similar chain species is obtained from the reaction of the lithiate of [(tBuNH)P(μ-NtBu)2P(H)[double bond, length as m-dash]O] (5) with [ClP(μ-NtBu)2P(NHtBu)] (2), the product being [(μ-O){P(μ-NtBu)2P(NHtBu)}2] (6). Compounds 3 and 6 are the first examples of O-bridged chain phosphazanes and potential precursors to new phosphorus-nitrogen macrocycles. The syntheses and X-ray structures of 3, 5 and 6 are reported.

Graphical abstract: Steric control in the oligomerisation of phosphazane dimers; towards new phosphorus–nitrogen macrocycles

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Article information

DOI
https://doi.org/10.1039/B314790H
Article type
Paper
Submitted
17 Nov 2003
Accepted
13 Jan 2004
First published
09 Feb 2004

Dalton Trans., 2004, 807-812

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Steric control in the oligomerisation of phosphazane dimers; towards new phosphorus–nitrogen macrocycles

E. L. Doyle, F. García, S. M. Humphrey, R. A. Kowenicki, L. Riera, A. D. Woods and D. S. Wright, Dalton Trans., 2004, 807 DOI: 10.1039/B314790H

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