Издательство СО РАН

Издательство СО РАН

Адрес Издательства СО РАН: Россия, 630090, а/я 187
Новосибирск, Морской пр., 2

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Поиск по журналу

Журнал структурной химии

2017 год, номер 3

THE CRYSTAL STRUCTURE OF N5O3 CRYPTAND

L. Pan1, B. Zhang2, Y. Su2, Z. Ma2
1National Engineering Research Center for Non-Food Biorefinery, Guangxi Academy of Sciences, Nanning, Guangxi, P. R. China
2Guangxi University, Guangxi, P. R. China
mzmz2009@sohu.com
Ключевые слова: cryptand, crystal structure, condensation, rare earth, tris(2-aminoethyl)amine
Страницы: 635-637

Аннотация

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)3x6H2O 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 endo-endo conformation, with the distance between the two bridgehead nitrogen atoms of 10.030(8) Å.

DOI: 10.15372/JSC20170325