Issue 3, 2000
From the journal:

Journal of the Chemical Society, Dalton Transactions

Crystal structure of p-chloro-N-benzylhexahomotriazacalix[3]arene and of the complex of its zwitterionic form with neodymium(III) nitrate

Pierre Thuéry,*a   Martine Nierlich,a   Jacques Vicensb  and  Hiroyuki Takemurac  

* Corresponding authors

a CEA/Saclay, SCM (CNRS URA 331), Bât. 125, Gif-sur-Yvette, France
E-mail: thuery@drecam.cea.fr

b ECPM, Laboratoire de Chimie des Interactions Moléculaires Spécifiques (CNRS UMR 7512), 25 rue Becquerel, Strasbourg, France

c Department of Chemistry, Faculty of Science, Kyushu University, Ropponmatsu 4-2-1, Chuo-ku, Fukuoka, Japan

Abstract

p-Chloro-N-benzylhexahomotriazacalix[3]arene reacts with neodymium(III) nitrate to form a 1∶1 complex in which the cation is bound to the three phenoxide oxygen atoms and to three bidentate nitrate ions. In the uncomplexed ligand, the three phenolic oxygen atoms form hydrogen bonds with the nitrogen atoms, whereas, in the complexed form, the three amine groups are transformed into ammonium cations by intramolecular transfer of protons (zwitterionic form) and form hydrogen bonds with the complexed phenoxide groups. The formation of this complex is peculiar among other lanthanide complexes of calixarenes since it occurs without addition of a basic agent, other than the amine groups included in the ligand molecule itself.

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Article information

DOI
https://doi.org/10.1039/A908423A
Article type
Paper
Submitted
21 Oct 1999
Accepted
26 Nov 1999
First published
19 Jan 2000

J. Chem. Soc., Dalton Trans., 2000, 279-283

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Crystal structure of p-chloro-N-benzylhexahomotriazacalix[3]arene and of the complex of its zwitterionic form with neodymium(III) nitrate

P. Thuéry, M. Nierlich, J. Vicens and H. Takemura, J. Chem. Soc., Dalton Trans., 2000, 279 DOI: 10.1039/A908423A

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