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Azide, water and adipate as bridging ligands for Cu(II) Synthesis, structure and magnetism of (μ4-adipato-κ-O)(μ-aqua)(μ-azido-κN1,N1)copper(II) monohydrate

Abstract : The synthesis, characterization, single crystal structure and magnetic properties of the compound [(CuN3(OH2))2(adp)]n (1) are presented, in which adp stands for the adipate(2-) anion. This compound consists of layers containing chains of six-coordinated Cu(II) ions; the chains are connected by μ4-adipate anions. The magnetically interesting part of the compound is the Cu(II) chain, built from 3 bridging ligands, i.e. a water ligand, an azide anionic ligand bridging by using a terminal N atom to connect 2 Cu(II) ions, and one symmetrically bridging carboxylato group of adipate; the other end of the tetradentate adipate anions symmetrically connect the chains, forming the layers. From the magnetic point of view the compound is considered as a Cu(II) chain with a quite unusual, symmetrical water bridge, the μ-syn-syn carboxylate and the μ-N3 bridge. The bridging water also hydrogen bonds to a terminal N of a nearby azido ligand. Magnetic susceptibility measurements show that 1 presents moderate ferromagnetic intrachain interactions (Jchain = +38.4 cm-1) with a metamagnetic behaviour for the inter-chain interaction with a critical field of 0.7 T. © 2016 Elsevier Ltd.
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Submitted on : Tuesday, July 16, 2019 - 11:33:34 AM
Last modification on : Tuesday, October 20, 2020 - 1:04:02 PM

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Z. Setifi, M. Ghazzali, C. Glidewell, O. Perez, F. Setifi, et al.. Azide, water and adipate as bridging ligands for Cu(II) Synthesis, structure and magnetism of (μ4-adipato-κ-O)(μ-aqua)(μ-azido-κN1,N1)copper(II) monohydrate. Polyhedron, Elsevier, 2016, 117, pp.244-248. ⟨10.1016/j.poly.2016.05.060⟩. ⟨hal-02184778⟩

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