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1D chlorine bridged mercury(II) complex containing nitronyl nitroxide radicals: Synthesis, crystal structures, and magnetic properties

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A novel 1D chlorine bridged mercury(II) complex containing nitronyl nitroxide radicals, [Hg2(NIT-1′-MeBzIm)Cl4] n (NIT-1′-MeBzIm = 2-{2′-[(1′-methyl)benzimidazolyl]}-4,4,5,5-tetrameth-ylimidazoline-1-oxyl-3-oxide), has been prepared and characterized by magnetic and single-crystal X-ray diffraction studies. The complex crystallizes in triclinic, space group P\(\bar 1\), Z = 2. Crystal data: C15H19C14Hg2N4O2, M = 830.32, a = 7.4454(16), b = 9.463(2), c = 16.180(3) Å, α = 94.245(2)°, β = 100.747(2)°, γ = 102.523(2)°, V = 1085.5(4) Å3, ρ c = 2.540 g/cm3, μ(MoKα) = 14.636 mm−1, F(000) = 762, R = 0.0312 and wR = 0.0779 for 3990 observed reflections with I > 2σ(I). The X-ray analysis reveals that the Hg2+ ions shows two coordination geometries of five-coordinated with a distorted square pyramidal coordination geometry and quadrilateral geometry. The units of [Hg2(NIT-1′-MeBzIm)Cl4] n were connected as 1D chain structure by the chlorine bridges. Magnetic investigation indicates the existence of weak intramolecular interactions is antiferromagnetic with J = −1.23 cm−1, where the spin Hamitonian is defined as H = \( - 2\sum\nolimits_{i,j} {J_{i,j} S_i S} \) within the complex.

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Liu, G., Cheng, J.T. & Chen, B. 1D chlorine bridged mercury(II) complex containing nitronyl nitroxide radicals: Synthesis, crystal structures, and magnetic properties. Russ J Coord Chem 39, 219–221 (2013). https://doi.org/10.1134/S1070328413020115

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  • DOI: https://doi.org/10.1134/S1070328413020115

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