A phosphorus-31 nuclear magnetic resonance study of amino-derivatives of the chlorocyclophosphazenes, N3P3Cl6 and N4P4Cl8
- 1 January 1976
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 16,p. 1582-1589
- https://doi.org/10.1039/dt9760001582
Abstract
The proton decoupled 31P n.m.r. spectra of an extensive series of primary and secondary amine derivatives of N3P3Cl6 and N4P4Cl8 have been recorded and analysed. 1H-{31P} INDOR studies show that P–N–P coupling constants for cis-N3P3Cl3(NMe2)3, N3P3(NMe2)6, and N4P4(NMe2)8 are positive. Trends in 31P chemical shifts and P–N–P coupling constants are discussed and compared with similar data for chloro(phenyl)- and amino(phenyl)-cyclophosphazenes. The appearance of ‘virtual coupling’ effects in the 1H spectra of some of these derivatives and the origins of broadening effects in the 31P spectra are discussed.Keywords
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