Issue 20, 2015

Two series of novel 3D potentially porous heterometallic Cu–Ln coordination frameworks assembled by 3,4-pyridinedicarboxylic acid with different topologies and channels: syntheses, structures, luminescence and magnetic properties

Abstract

Self-assembly of rare earth salts, Cu(NO3)2 and 3,4-pyridinedicarboxylic acid (3,4-pdcH2) resulted in the formation of two series of 3 d–4f heterometallic coordination polymers: [Ln2Cu3(3,4-pdc)6(H2O)12mH2nCH3OH (Ln = Eu (1, m = 22, n = 0), Gd (2, m = 22, n = 0) and Tb (3, m = 15.5, n = 5)) and [LnCu(3,4-pdc)2(OAc)(H2O)3]·8H2O (Ln = Ho (4), Er (5)). Their structures have been determined by single-crystal X-ray diffraction analyses and further characterized by elemental analyses, IR spectra, PXRD and TGA. The structures of isomorphous complexes 1–3 (Form I) are constructed with irregular (4,4)-connected 2D [Cu3(3,4-pdc)6(H2O)3]n sheets pillared by Ln(H2O)4, showing an intriguing 3D 36·418·53·6 framework with the treatment of the Ln2Cu3 unit as an 8-connected node. Complexes 4 and 5 (Form II) are constructed with (4,4)-connected 2D [Cu(3,4-pdc)2(H2O)]n sheets pillared by bimetallic units Ln2(OAc)2(H2O)4, exhibiting a fascinating 3D architecture with (4,8)-connected fluorite (412·612·84)(46)2 topology. There exist different 1D channels in the polymers of Form I and Form II, in which solvent molecules are accommodated. Moreover, their luminescence and magnetic properties have been investigated.

Graphical abstract: Two series of novel 3D potentially porous heterometallic Cu–Ln coordination frameworks assembled by 3,4-pyridinedicarboxylic acid with different topologies and channels: syntheses, structures, luminescence and magnetic properties

Supplementary files

Article information

Article type
Paper
Submitted
31 Oct 2014
Accepted
19 Jan 2015
First published
19 Jan 2015

RSC Adv., 2015,5, 15059-15068

Author version available

Two series of novel 3D potentially porous heterometallic Cu–Ln coordination frameworks assembled by 3,4-pyridinedicarboxylic acid with different topologies and channels: syntheses, structures, luminescence and magnetic properties

X. Liu, R. Guo, H. Liu, Y. Yu, X. Qi, J. Xu and C. Xie, RSC Adv., 2015, 5, 15059 DOI: 10.1039/C4RA13533D

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