| Abstract: A new manganese coordination polymer {[Mn(Hbim)(H2O)2]·(H2O)2}n(1) (where Hbim=1H-benzimidazole-5,6-dicarboxylate) has been synthesized by hydrothermal method and characterized by elemental analysis, IR, TGA and single-crystal X-ray diffraction. It crystallizes in orthorhombic, space group Pbca with a=0.728 2(14) nm, b=1.804 5(4) nm, c=1.915 5(4) nm, V=2.429 3(8) nm3, Z=8, C9H12MnN2O8, Mr=331.15, Dc=1.811 g·cm-3, F(000)=1 352, μ(Mo Kα)=1.130 mm-1, the final R=0.037 1 and wR=0.085 8 for observed reflections with I>2σ(I). Compound 1 is a 2D coordination polymer including 1D channels of 0.57 nm×0.75 nm (excluding van der Waals radii) along the c axis made up of interconnected Mn-carboxylate zigzag chains, and displays a three-dimensional (3D) supramolecular network via multiple intermolecular hydrogen bonds. Furthermore, the temperature dependent magnetic susceptibility has been evaluated under 1 000 Oe, and reveals the antiferromagnetic coupling. CCDC: 805737. |
