Email this article The crystal structure of N5O3 cryptand
- Authors: Pan L.1, Zhang B.2, Su Y.2, Ma Z.2
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Affiliations:
- State Key Laboratory of Non-Food Biomass and Enzyme Technology, National Engineering Research Center for Non-Food Biorefinery, Guangxi Key Laboratory of Biorefinery
- School of Chemistry and Chemical Engeneering
- Issue: Vol 58, No 3 (2017)
- Pages: 608-610
- Section: Brief Communications
- URL: https://bakhtiniada.ru/0022-4766/article/view/161330
- DOI: https://doi.org/10.1134/S0022476617030258
- ID: 161330
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Abstract
The title compound, 1,4,13,22,27-pentaaza-6,9:17,20:29,32-tribenzo-10,16,33-trioxabicyclo [11,11,11] pentatriacontane (C33H45N5O3), is synthesized by [1+1] tripodal condensation of trialdehyde (4,4′,4″-triformyl-triphenoxytriethylamine) with tris(2-aminoethyl)amine (tren) in the presence of La(NO3)3·6H2O as a template, followed by reduction with KBH4. There are six unique molecules in the unit. The molecule has a threefold symmetry axis passing through the bridgehead nitrogen atoms in the structure. As a result, only one strand of the cryptand molecule is present in the asymmetric unit. The structure presents an endoendo conformation, with the distance between the two bridgehead nitrogen atoms of 10.030(8) Å.
About the authors
L.-X. Pan
State Key Laboratory of Non-Food Biomass and Enzyme Technology, National Engineering Research Center for Non-Food Biorefinery, Guangxi Key Laboratory of Biorefinery
Email: mzmz2009@sohu.com
China, Nanning, Guangxi
B. Zhang
School of Chemistry and Chemical Engeneering
Email: mzmz2009@sohu.com
China, Guangxi
Y. Su
School of Chemistry and Chemical Engeneering
Email: mzmz2009@sohu.com
China, Guangxi
Z. Ma
School of Chemistry and Chemical Engeneering
Author for correspondence.
Email: mzmz2009@sohu.com
China, Guangxi
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