Issue 8, 2004
From the journal:

New Journal of Chemistry

Supramolecular architecture of new lanthanide coordination polymers of 2-aminoterephthalic acid and 1,10-phenanthroline

Chong-Bo Liu,ab   Chang-Yan Sun,a   Lin-Pei Jin*a  and  Shao-Zhe Luc  

* Corresponding authors

a Department of Chemistry, Beijing Normal University, Beijing, People's Republic of China
E-mail: lpjin@bnu.edu.cn
Fax: +86-10 6220 2075
Tel: +86-10 6220 5522

b Department of Chemistry, Nanchang University, Nanchang, People's Republic of China

c Laboratory of Excited State Processes, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, People's Republic of China

Abstract

This paper presents five new lanthanide coordination polymers with 2-aminoterephthalic acid (H2atpt) and 1,10-phenanthroline (phen), [Ln(atpt)1.5(phen)(H2O)]n [Ln = La (1); Eu (2)], [Ln2(atpt)3(phen)2(H2O)]n [Ln = Tb (3); Er (4)] and [Yb2(OH)(atpt)2.5(phen)2]n·1.75nH2O (5), prepared by hydrothermal reactions and structurally characterized. 1 and 2 are isostructural, in which all the Ln3+ ions are eight-coordinated. 3 and 4 are also isostructural and have two types of lanthanides; Ln(1) (Ln = Tb, Er) is seven-coordinated and Ln(2) (Ln = Tb, Er) is eight-coordinated in the asymmetric unit. 1–4 are two-dimensional rhombus-like grids constructed by bridging atpt ligands, and further form 3-D supramolecular architectures via hydrogen bonds and π–π stacks between phen molecules. Complex 5, in which there are two eight-coordinated Yb3+ ions linked by one hydroxyl group and one atpt ligand in the asymmetric unit, exhibits an interpenetrated 3-D network with a brick structure. In 1–4 one atpt ligand is coordinated to three or four Ln3+ ions (Ln = La, Eu, Tb, Er) in bridging modes and in 5 one atpt ligand is coordinated to two or three Yb3+ ions by double chelating or chelating-bridging mode. The high-resolution emission spectrum of 2 shows only one Eu3+ ion site in 2, which is in agreement with the results of the X-ray diffraction. The thermal stabilities of the supramolecular compounds 2, 4 and 5 show that the presence of amino groups induces formation of hydrogen bonds that are responsible for the increase in the thermal stability.

Graphical abstract: Supramolecular architecture of new lanthanide coordination polymers of 2-aminoterephthalic acid and 1,10-phenanthroline

About
Cited by
Related
Download options Please wait...

Article information

DOI
https://doi.org/10.1039/B402803A
Article type
Paper
Submitted
23 Feb 2004
Accepted
01 Apr 2004
First published
15 Jul 2004

New J. Chem., 2004,28, 1019-1026

Permissions

Request permissions

Supramolecular architecture of new lanthanide coordination polymers of 2-aminoterephthalic acid and 1,10-phenanthroline

C. Liu, C. Sun, L. Jin and S. Lu, New J. Chem., 2004, 28, 1019 DOI: 10.1039/B402803A

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements