Issue 10, 2012

1,2-Cyclohexanedionedioxime as a useful co-ligand for fabrication of one-dimensional Zn(ii) and Cd(ii) coordination polymers with wheel-and-axle topology and luminescent properties

Abstract

The combination of 1,2-cyclohexanedionedioxime (NioxH2) and carboxylate-containing ligands resulted in Zn(II) or Cd(II) robust metal building blocks which being coupled with the flexible pyridine ligands fabricated five one-dimensional (1D) coordination polymers {[Cd(CHOO)2(NioxH2)(bpe)]·DMF} (1), [Cd(CHOO)2(NioxH2)(dps)] (2), [Zn(CH3COO)2(NioxH2)(dps)] (3), [Cd(CH3COO)2(NioxH2)(dps)] (4), and {[Zn(pyta)2(NioxH2)]·DMF} (5) (where bpe = 4,4′-bipyridine ethane, dps = 4,4′-dipyridylsulfide, Hpyta = (4-pyridylthio)acetic acid, DMF = N,N-dimethylformamide), whose crystal structures were determined by single crystal X-ray diffraction. The stability of compounds 1 and 5 to loss of DMF as a guest has been addressed experimentally, and the crystal-to-crystal transformation observed for 1 resulted in the guest free 1D polymer [Cd(CHOO)2(NioxH2)(bpe)] (1a) which maintains its coordination network with the 10.3% unit cell volume contraction, while compound 5 remains unchangeable under the same conditions. Compounds 1, 5 and the dioxime-free 1D polymer [Cd(pyta)2(H2O)] (6) display blue luminescence upon excitation with ultraviolet light. The emission intensity of the guest-loaded complex 1 is effectively reduced in comparison with the previously reported DMF free analogues [Zn(CH3COO)2(NioxH2)(bpe)(H2O)] and [Cd(CH3COO)2(bpe)(H2O)].

Graphical abstract: 1,2-Cyclohexanedionedioxime as a useful co-ligand for fabrication of one-dimensional Zn(ii) and Cd(ii) coordination polymers with wheel-and-axle topology and luminescent properties

Supplementary files

Article information

Article type
Paper
Submitted
06 Jan 2012
Accepted
02 Feb 2012
First published
14 Mar 2012

CrystEngComm, 2012,14, 3750-3758

1,2-Cyclohexanedionedioxime as a useful co-ligand for fabrication of one-dimensional Zn(II) and Cd(II) coordination polymers with wheel-and-axle topology and luminescent properties

L. Croitor, E. B. Coropceanu, A. V. Siminel, O. Kulikova, V. I. Zelentsov, T. Datsko and M. S. Fonari, CrystEngComm, 2012, 14, 3750 DOI: 10.1039/C2CE00020B

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