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Issue 11, 2013
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The synthesis, structures and magnetic properties of polynuclear RuIII–3d (3d = MnII/III, NiII, CuII) compounds based on [RuIII(Q)2(CN)2]

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Abstract

The synthesis, crystal structures and magnetic properties of six cyano-bridged heterobimetallic compounds prepared from a paramagnetic RuIII building block, trans-(PPh4)[RuIII(Q)2(CN)2] (1) (Q = the anion of 8-hydroxyquinoline), are described. 1 reacts with hydrated MnCl2 in MeOH or DMF to produce a trinuclear compound {[RuIII(Q)2(CN)2]2[MnII(MeOH)4]}·8MeOH (2), or a 1-D zigzag chain {[MnII(DMF)2(Cl)](μ-CN)2[RuIII(Q)2]}n(3). The MnII has a distorted octahedral environment in 2 and a trigonal-bipyramidal environment in 3. 1 reacts with [MnIII(L1)(Cl)(H2O)] in MeOH to produce the 1-D {[RuIII(Q)2](μ-CN)2[MnIII(L1)]}n (4) that consists of alternating MnIII and RuIII units. 1 also reacts with [CuII(cyclam)Br2] and [NiII(cyclam)Cl2] in MeOH to produce the trinuclear complexes [RuIII(Q)2(CN2)]2[MII(cyclam)] (M = CuII (5) and NiII (6)). On the other hand, the reaction of 1 with [NiII(cyclen)Cl2] produces a 1-D zigzag chain {([RuIII(Q)2(CN2)][NiII(cyclen)])[RuIII(Q)2(CN2)]}n (7). Compounds 2–4 exhibit antiferromagnetic coupling between RuIII and MnIII/II centres. Antiferromagnetic coupling also occurs between RuIII and CuII centres in 5. On the other hand, compounds 6 and 7 exhibit ferromagnetic coupling between RuIII and NiII through cyanide bridges.

Graphical abstract: The synthesis, structures and magnetic properties of polynuclear RuIII–3d (3d = MnII/III, NiII, CuII) compounds based on [RuIII(Q)2(CN)2]−

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Publication details

The article was received on 03 Oct 2012, accepted on 10 Dec 2012 and first published on 16 Jan 2013


Article type: Paper
DOI: 10.1039/C2DT32331A
Citation: Dalton Trans., 2013,42, 3876-3887
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    The synthesis, structures and magnetic properties of polynuclear RuIII–3d (3d = MnII/III, NiII, CuII) compounds based on [RuIII(Q)2(CN)2]

    J. Xiang, L. Jia, B. Wang, S. Yiu, S. Peng, W. Wong, S. Gao and T. Lau, Dalton Trans., 2013, 42, 3876
    DOI: 10.1039/C2DT32331A

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