Structure of a piperidine-modified calix[4]arene derivative and spectral resolution of its interaction with rare earth metals with chemometric methods.

Department of Chemistry, Tongji University, No. 1239 Siping Road, Shanghai 200092, People's Republic of China. wangli@tongji.edu.cn

Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy 2013 Mar 15

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A piperidine-modified calix[4]arene derivative was synthesized and its structure was confirmed with X-ray diffraction data. UV-visible spectroscopy was used to study its molecular recognition of rare earth ions. The results revealed the calix[4]arene derivative could separate tight metal picrate ion pairs by complexation with the rare earth metal ions in tetrahydrofuran. Resolution of the UV-visible spectra with chemometric methods revealed that the derivative and the rare earth ions Eu(3+), Dy(3+), and Tb(3+) formed ML(2) complexes with stability constants of 10(8.26), 10(8.29), and 10(7.41) respectively. Copyright © 2012 Elsevier B.V. All rights reserved.

Citation

Li Wang, Xiaoya Wang, Yanmei Wang. Structure of a piperidine-modified calix[4]arene derivative and spectral resolution of its interaction with rare earth metals with chemometric methods. Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy. 2013 Mar 15;105:62-6