PMR and DMR studies of 1,5-diphenylverdazyls

Brunner, H.; Hausser, Karl H.; Neugebauer, Franz A.

doi:10.1016/S0040-4020(01)97772-5

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PMR and DMR studies of 1,5-diphenylverdazyls

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Brunner, H.
Research Group Prof. Dr. Haeberlen, Max Planck Institute for Medical Research, Max Planck Society;

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Hausser, Karl H.
Department of Molecular Physics, Max Planck Institute for Medical Research, Max Planck Society;

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Neugebauer, Franz A.
Department of Organic Chemistry, Max Planck Institute for Medical Research, Max Planck Society;

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http://www.sciencedirect.com/science/article/pii/S0040402001977725/pdf?md5=e3c20662ab6c7cfa3d11e0e28a85700c&pid=1-s2.0-S0040402001977725-main.pdf
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Citation

Brunner, H., Hausser, K. H., & Neugebauer, F. A. (1971). PMR and DMR studies of 1,5-diphenylverdazyls. Tetrahedron, 27(15), 3611-3621. doi:10.1016/S0040-4020(01)97772-5.

Cite as: https://hdl.handle.net/11858/00-001M-0000-002D-7AB0-C

Abstract

Using PMR and DMR the hfs H and D coupling constants for a series of substituted 1,5-diphenylverdazyls have been measured and assigned. The C-6 methylene proton resonance has been studied as a function of temperature. The results indicate a ring inversion in verdazyls which is slow on the NMR time scale. Furthermore, the gain in resolution is discussed obtained with PMR in DBNO, and with DMR.