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Synthesis, nuclear magnetic resonance, and X-ray investigations of 1,10-diazacyclooctadeca-2,9-dione

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Abstract

The structure of the title compound has been investigated in the solid state and in solution by X-ray and NMR methods, respectively. The crystals are triclinic, space groupP¯1, with cell dimensions:a=9.616(5),b=9.923(9),c=10.21(1)Å,α=118.42(4)°,β=96.10(5)°, γ=94.77(5)°. The structure was solved by direct methods, and refined against 3051 unique reflections by a full-matrix, least-squares procedure, givingR=0.049. A twofold symmetry element in the molecule, found from1H-NMR investigations, has been established by X-ray investigations to be an approximate twofold symmetry axis, bisecting the C(5)-C(6) and C(14)-C(15) bonds.

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Authors and Affiliations

  1. Institute of Organic Chemistry, Polish Academy of Sciences, 01-224, Warszawa, Poland

    P. Sałański, J. W. Krajewski, P. Gluziński, S. Kasprzyk, T. Stankiewicz & J. Jurczak

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  1. P. Sałański
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  2. J. W. Krajewski
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  3. P. Gluziński
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  4. S. Kasprzyk
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  5. T. Stankiewicz
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  6. J. Jurczak
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Sałański, P., Krajewski, J.W., Gluziński, P. et al. Synthesis, nuclear magnetic resonance, and X-ray investigations of 1,10-diazacyclooctadeca-2,9-dione. Journal of Crystallographic and Spectroscopic Research 21, 195–200 (1991). https://doi.org/10.1007/BF01161064

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  • DOI: https://doi.org/10.1007/BF01161064

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