Issue 11, 2012

A 1D coordination polymer built on asymmetric μ1,1,3-azide bridge: from unusual topology to magnetic properties and Cu(ii)/Cu(i) redox reversibility

Abstract

An azide-bridged Cu(II) one dimensional polymer was synthesized in a one pot reaction in the presence of ammonia. The refined crystal structure evidenced the unusual asymmetric μ1,1,3 coordination mode of the azide ion leading to a {Cu(μ1,1,3-N3)(μ1-N3)(NH3)0.8(H2O)1.2}n chain. The redox process of this complex was studied by cyclic voltammetry evidencing the Cu(II)/Cu(I) reversibility. Magnetic measurements were interpreted as a uniform antiferromagnetic chain (J = −15.2 cm−1) holding rather strong inter-chain exchange (zJ′ = −2.8 cm−1). Multireference difference dedicated configuration interaction (DDCI) calculations confirmed the non-negligible intensity of inter-chain interactions and evidenced a strong influence of the type of coordinated solvent, NH3 or H2O, on the nature and magnitude of the magnetic exchange.

Graphical abstract: A 1D coordination polymer built on asymmetric μ1,1,3-azide bridge: from unusual topology to magnetic properties and Cu(ii)/Cu(i) redox reversibility

Supplementary files

Article information

Article type
Paper
Submitted
26 Jan 2012
Accepted
03 Aug 2012
First published
08 Aug 2012

New J. Chem., 2012,36, 2228-2235

A 1D coordination polymer built on asymmetric μ1,1,3-azide bridge: from unusual topology to magnetic properties and Cu(II)/Cu(I) redox reversibility

J. Tommasino, G. Chastanet, B. L. Guennic, V. Robert and G. Pilet, New J. Chem., 2012, 36, 2228 DOI: 10.1039/C2NJ40302A

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