Abstract
A new 3d-4f coordination polymer {[Sm2Ni(Pdc)2(SO4)2(H2O)6] · H2O} n (H2Pdc = pyridine-3,5-dicarboxylic acid) has been synthesized under hydrothermal conditions and structurally determined by X-ray diffraction method. The X-ray diffraction analysis reveals the compound crystallizes in the triclinic system, space group $$P\bar 1$$ , with a = 10.062(4), b = 10.249(4), c = 12.744(5) A, α = 93.548(4)°, β = 102.601(4)°, γ = 94.022(3)°, V = 1275.4(8) A3, F(000) = 972, M r = 1077.85, Z = 2, ρ c = 2.624 g cm−3, μ = 5.55 mm−1, final R = 0.0299, wR = 0.0805 for 4716 independent reflections with R int = 0.0204. According to the structure determination the complex is a three-dimensional (3D) network structure in which infinite lanthanide-carboxylate chains are linked by [Ni(SO4)2]2− metalloligands to form a mixed-metal coordination network.
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