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A carbon-13 NMR study of phenyl-substituted cyclophosphazenes

Krishnamurthy, SS and Ramabrahmam, P and Woods, M (1981) A carbon-13 NMR study of phenyl-substituted cyclophosphazenes. In: Organic Magnetic Resonance, 15 (2). pp. 205-207.

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Abstract

The 13C NMR spectra of the cyclotriphosphazenes $N_3P_3CI_6_-_n Ph_n (n=2, 3, 4, 6)$ and the tetrameric derivatives $2,2,6,6-N_4P_4CI_4Ph_4$ and $N_4P_4Ph_8$ have been recorded. The carbon chemical shifts can be largely explained on the basis of concomitant mesomeric electron release from the benzene ring and inductive electron withdrawal by phosphorus. The magnitude of 1J(P, C-1) for the non-geminal compounds is \simeq 40 Hz higher than that observed for the geminal compounds. Some aspects of the NMR data are also discussed with reference to the X-ray crystal structures of several phenyl-substituted cyclotri- and cyclotetra-phosphazenes.

Item Type: Journal Article
Additional Information: The copyright belongs to Heyden & Son Ltd.
Department/Centre: Division of Chemical Sciences > Inorganic & Physical Chemistry
Depositing User: Sandhya Jagirdar
Date Deposited: 25 Oct 2005
Last Modified: 27 Aug 2008 11:31
URI: http://eprints.iisc.ac.in/id/eprint/3895

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