【摘 要】
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A novel coordination polymer {[Cu(en)2][Ag2I4]}n (en = ethylenediamine) was synthesized by the reaction of NaAgI2 and Cu(en)2(NO3)2·2H2O at room temperature wi
【机 构】
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College of Chemistry and Chemical Engineering
论文部分内容阅读
A novel coordination polymer {[Cu(en)2][Ag2I4]}n (en = ethylenediamine) was synthesized by the reaction of NaAgI2 and Cu(en)2(NO3)2·2H2O at room temperature with pH = 6.0, and the structure was characterized by X-ray single-crystal diffraction. It crystallizes in monoclinic, space group C2/m, with a=10.646(2), b = 13.304(3), c = 6.8445(14)(A), β = 118.95(3)°, C4H16N4CuAg2I4, Mr = 907.10, V = 848.3(4)(A)3, Z = 2, Dc = 3.551 g/cm3, F(000) = 806, μ(MoKα) = 10.787 mm(1, the final R1 = 0.0256 and wR2 = 0.0654 for 900 observed reflections with I > 2σ(I). According to structural analysis, the title compound consists of template cation [Cu(en)2]2+ and inorganic chain [Ag2I4]n2-. The polymeric negative chain [Ag2I4]n2- is built up from pairs of AgI4 tetrahedron by sharing one edge. Through N-H…I hydrogen-bonding interactions, the whole structure represents a quasi-two dimensional arrangement. Electrostatic attraction exists between organic cations and inorganic chains, leading to a so-called organic-inorganic hybrid structure.
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