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FLEXIBILITY OF SUPPOSED “RIGID” MOLECULES: SUBSTITUTED 2,5-PIPERAZINEDIONES (DIKETOPIPERAZINES)
The relevant results of accurate X-ray analyses of both the trans-and the L-cis-3,6-dimethyl-2,5-piperazinediones (diketopiperazines) are reported. We note that a large variability of conformations for the ring system can be accomplished by coupling small bond-angle deformations with large variation...
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| Main Authors: | , , , |
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| Format: | Artigo |
| Sprog: | Inglês |
| Udgivet: |
1969
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| Fag: | |
| Online adgang: | https://ncbi.nlm.nih.gov/pmc/articles/PMC223646/ https://ncbi.nlm.nih.gov/pubmed/16591734 |
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