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Issue 43, 2017
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High-nuclearity heterometallic clusters with both an anion and a cation sandwiched by planar cluster units: synthesis, structure and properties

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Abstract

To develop high-nuclearity clusters as multi-functional materials, we prepared a new type of sandwich clusters using an anion-templated synthetic strategy. The reactions of (2R,3R)-2,3-dihydroxybutanedioylbis(salicylidene hydrazone) (H6L) with [Cu2(OAc)4(H2O)2] in the presence of alkali metal halide (NaCl, NaBr, KCl or KBr) provided four high-nuclearity clusters [MCu18L6X(C5H5N)15(DMF)3]·3DMF·6H2O (M = Na and X = Cl (1); M = Na and X = Br (2); M = K and X = Cl (3); and M = K and X = Br (4)). They represent a new type of nanoscale high-nuclearity heterometallic sandwich clusters, in which the halide anion is fully sandwiched by two planar nonanuclear clusters, and the alkali metal ion is half-sandwiched on the top of the upper planar nonanuclear cluster. The experimental magnetic data and simulating results reveal dominant antiferromagnetic interactions between metal ions in these compounds. Their dielectric constants and electric hysteresis loops were also measured.

Graphical abstract: High-nuclearity heterometallic clusters with both an anion and a cation sandwiched by planar cluster units: synthesis, structure and properties

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Publication details

The article was received on 05 Aug 2017, accepted on 09 Oct 2017 and first published on 09 Oct 2017


Article type: Paper
DOI: 10.1039/C7DT02881D
Citation: Dalton Trans., 2017,46, 15032-15039
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    High-nuclearity heterometallic clusters with both an anion and a cation sandwiched by planar cluster units: synthesis, structure and properties

    Z. Chen, Y. Shen, L. Li, H. Zou, X. Fu, Z. Liu, K. Wang and F. Liang, Dalton Trans., 2017, 46, 15032
    DOI: 10.1039/C7DT02881D

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