Studies of Phosphazenes. Part 14. The Tautomerism of Oxocyclotriphosphazadienes

DOI: 10.1039/DT9820001549

Source and publish data:

Journal of the Chemical Society, Dalton Transactions p. 1549 - 1554 (1982)

Update date:2022-07-29

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Authors:

Dhathathreyan, K. S.

Krishnamurthy, S. S.

Vasudeva Murthy, A. R.

Shaw, Robert A.

Woods, Michael

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Article abstract of DOI:10.1039/DT9820001549

The tautomeric behaviour of 'monohydroxycyclotriphosphazatrienes' has been investigated by 31 P n.m.r. spectroscopy.These derivatives exist as oxocyclotriphosphazadiene tautomers in which the hydrogen atom is attached to a ring nitrogen atom α to the phosphoryl group.Three types of prototropic behaviour are observed: (a) no exchange is detected and only one tautomer is present t)2R3O (R=OMe or OEt)>; (b) exchange takes place between two equivalent sites and only one tautomer is observed ; and (c) exchange occurs between two non-equivalent sites and two tautomers are presented n)>.It is shown that basicity calculations using substituent constants have predictive value since they are in good agreement with the spectroscopic observations.

Full text of DOI:10.1039/DT9820001549

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