Abstract
A new cobalt(II) coordination polymer, [Co2(bpa)2(Brip)2]n (H2Brip = 4-bromoisophthalic acid, bpa = 1,2-bi(4-pyridyl)ethane), has been synthesized through hydrothermal reaction. It was characterized by elemental analysis, IR spectra, thermogravimetric analysis, magnetic properties, and X-ray single-crystal diffraction. It crystallizes in the monoclinic space group P21/c with a = 10.2166(16), b = 13.647(2), c = 13.593(2) Å, β = 105.244(2)°, V = 1828.5(5) Å3, C40H30Br2Co2N4O8, Mr = 972.36, Z = 2, Dc = 1.766 g/cm3, μ((MoKα) = 3.154 mm−1, F(000) = 972, the R = 0.0479, and wR = 0.1251 for 3405 observed reflections with I > 2σ(I). The adjacent Co ions are bridged by Brip to form a 1D chain. The 1D chains are further connected by bpa to generate a 2D network. Variable-temperature magnetic susceptibility measurements indicate the occurrence of weak ferromagnetic properties between adjacent Co ions.
Published Version
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