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Issue 12, 2016
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Stabilization of Cu7 clusters in azide networks: syntheses, structures and magnetic behaviour

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Abstract

Two new azide bridged copper(II) coordination polymer compounds, [Cu7(N3)14(C3H10N2)(C4H13N3)]n (I) and [Cu7(N3)14(C3H10N2)(C5H15N3)2]n (II) [where C3H10N2 = 1,2-diaminopropane (1,2-DAP); C4H13N3 = diethylenetriamine (DETA); C5H15N3 = N-2-aminoethyl-1,3-propanediamine (AEDAP)] were prepared by employing a room temperature diffusion technique involving three layers. Single crystal studies reveal that both compounds I and II, have similar connectivity forming Cu7 clusters through end-on (EO) bonding of the azide. The Cu7 clusters are connected through end-to-end (EE) connectivity of the azides forming three-dimensional structures. Magnetic studies confirmed the ferromagnetic interactions within the Cu7 units and revealed the occurrence of concomitant ferro- and antiferro-magnetic interactions between these clusters. As a result I behaves as a weak-ferromagnet with TC = 10 K.

Graphical abstract: Stabilization of Cu7 clusters in azide networks: syntheses, structures and magnetic behaviour

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Publication details

The article was received on 06 Nov 2015, accepted on 02 Feb 2016 and first published on 03 Feb 2016


Article type: Paper
DOI: 10.1039/C5DT04387E
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Citation: Dalton Trans., 2016,45, 5140-5150
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    Stabilization of Cu7 clusters in azide networks: syntheses, structures and magnetic behaviour

    S. Mistry, J. Sutter and S. Natarajan, Dalton Trans., 2016, 45, 5140
    DOI: 10.1039/C5DT04387E

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