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New Multidimensional Coordination Polymers with μ2- and μ3-dcno Cyano Carbanion Ligand {dcno– = [(NC)2CC(O)O(CH2)2OH]–}

Abstract : New polymeric materials [M(dcno)2(H2O)2] [M = FeII (1), CoII (2)] and [M(dcno)2] [M = CuII (3), MnII (4)] with dcno– =[(NC)2CC(O)O(CH2)2OH]– = 2,2-dicyano-1-(2-hydroxyethoxy)ethenolate anion have been synthesised and characterised by IR spectroscopy, X-ray crystallography and magnetic measurements. In compounds 1 and 2, each organic ligand acts in a bridging mode with its two nitrogen atoms bound to two different metal ions, while in compounds 3 and 4, each organic anion acts as a μ3-bridging ligand through its two nitrogen atoms and the oxygen atom of the OH group. Each metal ion has a pseudo-octahedral trans-MN4O2 environment with four nitrogen atoms from four different organic ligands and two oxygen atoms from two water molecules in compounds 1 and 2 and from the OH group of the cyanocarbanion ligand in compounds 3 and 4. These coordination modes give rise to 1D, 2D and 3D arrangements for compounds 1, 2 and 3–4, respectively. Magnetic measurements show weak antiferromagnetic coupling between metal centres in the four compounds
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https://hal.univ-brest.fr/hal-01581303
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Submitted on : Monday, September 4, 2017 - 2:56:10 PM
Last modification on : Friday, July 10, 2020 - 4:05:22 PM

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Samia Benmansour, Fatima Setifi, Smail Triki, Jean Salaün, Fanny Vandevelde, et al.. New Multidimensional Coordination Polymers with μ2- and μ3-dcno Cyano Carbanion Ligand {dcno– = [(NC)2CC(O)O(CH2)2OH]–}. European Journal of Inorganic Chemistry, Wiley-VCH Verlag, 2007, 2007 (1), pp.186 - 194. ⟨10.1002/ejic.200600449⟩. ⟨hal-01581303⟩

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