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Studies of phosphazenes. Part 16. Spectroscopic investigations of bicyclic phosphazenes of the type $N_4P_4(NHR)_6(NR)$ and $N_4P_4(NMe_2)_5$(NHR)(NR)

Ramabrahmam, P and Dhathathreyan, KS and Krishnamurthy, SS (1983) Studies of phosphazenes. Part 16. Spectroscopic investigations of bicyclic phosphazenes of the type $N_4P_4(NHR)_6(NR)$ and $N_4P_4(NMe_2)_5$(NHR)(NR). In: Indian Journal of Chemistry, Section A: Inorganic, Physical, Theoretical & Analytical, 22A (1). pp. 1-5.

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Abstract

Octachlorocyclotetraphosphazene $(N_4P_4Cl_8)$ reacts with an excess of $RNH_2 (R = Pr, Me_2CH, Bu)$ in $CHCl_3$ to give a mixture of bicyclic phosphazene, $N_4P_4(NHR)_6(NR)$, and octakis(amino) deriv., $N_4P_4(NHR)_$8. The bicyclic phosphazenes are only formed in low yields when $R = Me_2CH$, Bu; formation of bicyclic phosphazene has not been detected in the reaction of $N_4P_4Cl_8$ with $PhCH_2NH_2$. 31P NMR and IR spectra of the products are presented. 31P NMR parameters for six asym. substituted bicyclic phosphazenes $N_4P_4(NMe_2)_5(NHR)(NR)$ have been obtained by computer analysis and these results are also discussed.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to National Institute of Science Communication and Information Resources
Department/Centre: Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited: 16 Apr 2008
Last Modified: 27 Aug 2008 13:19
URI: http://eprints.iisc.ernet.in/id/eprint/13666

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