Issue 14, 1976
From the journal:

Journal of the Chemical Society, Dalton Transactions

Conformational effects on P–N–P coupling constants in diphosphinoamines and related compounds

Ronald J. Cross,   Thomas H. Green  and  Rodney Keat  

Abstract

1 H-{31P} and 31P n.m.r. measurements on the triphosphazanes (Ph2P·NR)2PPh show that J(PNP) is +280 Hz when R = Me and 25.1 Hz when R = Et. A similar marked dependence on the R groups has been found for the diphosphinoamines, Ph2P·NR·PPhCl (R = Me, Et, Prn, Pri, and But)(+334 to –35 Hz), and this may be related to the conformations about the P–N bonds, which are influenced by the stereochemical bulk of R. 1H-{31P} INDOR experiments on the symmetrical diphosphinoamines, Ph2P·NR·PPh2(R = Me, Et, and Pri), indicatethat J(PNP) is much greater when R = Me than when R = Et or Pri.

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Article information

DOI
https://doi.org/10.1039/DT9760001424
Article type
Paper

J. Chem. Soc., Dalton Trans., 1976, 1424-1428

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Conformational effects on P–N–P coupling constants in diphosphinoamines and related compounds

R. J. Cross, T. H. Green and R. Keat, J. Chem. Soc., Dalton Trans., 1976, 1424 DOI: 10.1039/DT9760001424

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