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New tetrahydro-1,2,4,5-tetrazinan-3-ones and oxoverdazyl free radicals

New tetrahydro-1,2,4,5-tetrazinan-3-ones and oxoverdazyl free radicals
New tetrahydro-1,2,4,5-tetrazinan-3-ones and oxoverdazyl free radicals
A series of tetrahydro-1,2,4,5-tetrazinan-3-ones have been prepared by the reaction of carbonic acid bis (1-methylhydrazide) with aromatic aldehydes. These were oxidised to oxoverdazyl free radicals and used immediately for ESR spectroscopy studies that indicate that the unpaired electron is delocalised over the verdazyl ring. The ESR spectra can be very well simulated considering hyperfine couplings with the four nitrogen atoms of the verdazyl ring and the six hydrogen atoms of the two methyl groups bonded to it.
verdazyls, esr, free radicals, 1, 2, 4, 5-tetrazinanones verdazyls, 3, 5-triphenylverdazyl, 6-oxoverdazyls, 6-thioxoverdazyls, substituents, derivatives, endor, nmr, epr
0308-2342
515-520
Plater, M. John
b5fd2be8-1818-470e-b12a-64e7601175a3
Sinclair, James P.
8304b44d-b9d6-4a1d-9ae6-83923295e9be
Kemp, Steven
90bfffca-b4a8-48a4-b732-f6e709d4819b
Gelbrich, Thomas
42309d69-eaf1-4bb7-ba2e-db61f338e370
Hursthouse, Michael B.
57a2ddf9-b1b3-4f38-bfe9-ef2f526388da
Gómez-García, Carlos J.
f959890f-0230-4bc9-8bd9-f40b02e23cb4
Plater, M. John
b5fd2be8-1818-470e-b12a-64e7601175a3
Sinclair, James P.
8304b44d-b9d6-4a1d-9ae6-83923295e9be
Kemp, Steven
90bfffca-b4a8-48a4-b732-f6e709d4819b
Gelbrich, Thomas
42309d69-eaf1-4bb7-ba2e-db61f338e370
Hursthouse, Michael B.
57a2ddf9-b1b3-4f38-bfe9-ef2f526388da
Gómez-García, Carlos J.
f959890f-0230-4bc9-8bd9-f40b02e23cb4

Plater, M. John, Sinclair, James P., Kemp, Steven, Gelbrich, Thomas, Hursthouse, Michael B. and Gómez-García, Carlos J. (2006) New tetrahydro-1,2,4,5-tetrazinan-3-ones and oxoverdazyl free radicals. Journal of Chemical Research, (8), 515-520.

Record type: Article

Abstract

A series of tetrahydro-1,2,4,5-tetrazinan-3-ones have been prepared by the reaction of carbonic acid bis (1-methylhydrazide) with aromatic aldehydes. These were oxidised to oxoverdazyl free radicals and used immediately for ESR spectroscopy studies that indicate that the unpaired electron is delocalised over the verdazyl ring. The ESR spectra can be very well simulated considering hyperfine couplings with the four nitrogen atoms of the verdazyl ring and the six hydrogen atoms of the two methyl groups bonded to it.

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More information

Published date: 2006
Keywords: verdazyls, esr, free radicals, 1, 2, 4, 5-tetrazinanones verdazyls, 3, 5-triphenylverdazyl, 6-oxoverdazyls, 6-thioxoverdazyls, substituents, derivatives, endor, nmr, epr

Identifiers

Local EPrints ID: 44523
URI: http://eprints.soton.ac.uk/id/eprint/44523
ISSN: 0308-2342
PURE UUID: 06751de6-abb4-4e40-8ba0-e7a8e6755389

Catalogue record

Date deposited: 07 Mar 2007
Last modified: 13 Mar 2019 21:07

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