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

Abstract

To develop High-nuclearity clusters as multi-functional materials, we prepared a new type of sandwich clusters using anion-templated synthetic strategy. The reactions of (2R,3R)-2,3-dihydroxybutanedioylbis(salicylidenehydrazone) (H6L) with [Cu2(OAc)4(H2O)2] in the presence of alkali metal halide (NaCl, NaBr, KCl or KBr) gave four high-nuclearity clusters [MCu18L6X(C5H5N)15(DMF)3]∙3DMF∙6H2O (M = Na, X = Cl (1); M = Na, X= Br (2); M = K, X = Cl (3); M = K, 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 experimetal magnetic data and simulating results reveal dominant antiferromagnetic interactions between the metal ions in these compounds. Their dielectric constants and electric hysteresis loops were also measured.

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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, Accepted Manuscript
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    High-nuclearity heterometallic clusters with both anion and 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, Accepted Manuscript , DOI: 10.1039/C7DT02881D

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