Jump to main content
Jump to site search
PLANNED MAINTENANCE Close the message box

Scheduled maintenance upgrade on Thursday 4th of May 2017 from 8.00am to 9.00am (BST).

During this time our websites will be offline temporarily. If you have any questions please use the feedback button on this page. We apologise for any inconvenience this might cause and thank you for your patience.


Issue 5, 2013
Previous Article Next Article

Structural diversity directed by switchable coordination of substitute groups in a ternary CuII-triazole-sulfoisophthalate self-assembly system: synthesis, crystal structures and magnetic behavior

Author affiliations

Abstract

Four magnetic samples with different building blocks and dimensionalities, {[Cu4(atr)23-OH)2(sip)2]·4H2O}n (1), {[Cu4(atr)2(H2O)8(μ-OH)2(sip)2]·1.3CH3OH·0.7H2O}n (2), {[Cu3(atr)4(H2O)2(sip)2]·4H2O}n (3) and {[Cu3(atr)4(H2O)23-OH)(sip)(Hsip)]·2CH3OH·2.75H2O}n (4) (atr = 4-amino-1,2,4-triazole and sip3− = 5-sulfoisophthalate), were obtained and characterized structurally and magnetically. Complex 1 exhibits a three-dimensional (3D) robust framework with butterfly-like CuII4 clusters periodically extended by tetratopic sip3− connectors. Complex 2 possesses a 2D layer with alternating CuII3 + CuII1 chains crosslinked by pairs of ditopic sip3− linkers. By contrast, the latter two entities feature 1D broad ribbons with linear (for 3) and triangular CuII3 cores (for 4) propagated by bidirectional sip3− connectors. Structural analysis reveals that the diverse building blocks and dimensionalities of 1–4 are significantly dominated by the tunable coordination of exocyclic amino- and/or sulfonate-group of the mixed ligands. Magnetically, antiferromagnetic interactions with variable strength transmitted by –NN– moiety of atr and hydroxyl mediators result in overall S = 0 (for 1) and 1/2 (for 3 and 4) spin ground states. These interesting results indicate that coordinative side group in the ternary metal ion-azolate-carboxylate system can be utilized to generate aesthetically pleasing building units and variably polytopic connectors, leading to differently extended superstructures and magnetic behavior.

Graphical abstract: Structural diversity directed by switchable coordination of substitute groups in a ternary CuII-triazole-sulfoisophthalate self-assembly system: synthesis, crystal structures and magnetic behavior

Back to tab navigation
Please wait while Download options loads

Supplementary files

Publication details

The article was received on 24 Aug 2012, accepted on 25 Oct 2012 and first published on 25 Oct 2012


Article type: Paper
DOI: 10.1039/C2DT31935G
Citation: Dalton Trans., 2013,42, 1581-1590
  •   Request permissions

    Structural diversity directed by switchable coordination of substitute groups in a ternary CuII-triazole-sulfoisophthalate self-assembly system: synthesis, crystal structures and magnetic behavior

    E. Yang, Z. Liu, C. Zhang, Y. Yang and X. Zhao, Dalton Trans., 2013, 42, 1581
    DOI: 10.1039/C2DT31935G

Search articles by author