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Syntheses, Crystal Structures and Properties of Lanthanide(III) Complexes with N-Protected Aminoacid of N-p-Tosylglycinate

✍ Scribed by Man-Bo Zhang; Zi-Lu Chen; Rui-Xiang Hu; Fu-Pei Liang; Zhong-Yuan Zhou

Publisher: John Wiley and Sons
Year: 2006
Tongue: English
Weight: 125 KB
Volume: 24
Category: Article
ISSN: 0256-7660
DOI: 10.1002/cjoc.200690037

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✦ Synopsis

Complexes {[Ln(H 2 O) 2 (TsGlyH) 3 ] m •nH 2 O} ∞ (Ln＝La (1), m＝2, n＝6; Nd (2), m＝2, n＝7; Eu (3), m＝2, n＝ 0; Gd (4), m＝2, n＝2; Er (5), m＝3, n＝5 and Yb (6), m＝3, n＝0, TsGlyH＝N-p-tosylglycine monoanion), have been prepared and characterized by IR spectra, elemental analysis, and TG-DTG. 4 and 5 were structurally determined by X-ray diffraction analysis, showing that both of them are comprised of a one dimensional chain structure established via the coordination of µ-carboxylate groups from N-p-tosylglycinate to the corresponding lanthanide(III) ions. The one dimensional chains were found inclined to form two-dimensional network via hydrogen bonding and then three dimensional network structure via non-classical hydrogen bonding. The fluorescence spectra of them revealed that the fluorescence of the ligand was quenched by Ln(III) ions. In the tested biological activity experiments, they behaved inhibiting effects against the growth of bacteria, indicating that it is a potential medicament worthy of further investigation.

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