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A copper(II) coordination polymer, [Cu3(HOA)2(bpp)4]n (1, H4OA = 3,3′,4,4′-oxidiphthalic acid, bpp = 1,3-bis(4-pyridyl) propane), has been hydrothermally synthesized. The crystal structure is of monoclinic, space group P21/c with a = 11.544(3), b = 16.129(4), c = 21.181(6) , β = 98.848(5), V = 3897.0(2) 3, C84O18N8H70Cu3, Mr = 1670.13, Z = 2, Dc = 1.423 g/cm3, F(000) = 1722, μ = 0.887 mm-1 , R = 0.0878 and wR = 0.2583 for 8496 observed reflections (I > 2σ(I)). Single-crystal X-ray structural analysis reveals that 1 is a three-dimensional (3D) framework based on a two-dimensional (2D) mesomeric layer of alternating left-and right-handed helical chains. The monodentate terminal and bidentate bridging bpp ligands in the same conformation are all encapsulated in the figure-of-eight-shaped channels, thus further stabilizing the whole three-dimen-sional framework.
A copper (II) coordination polymer [Cu3 (HOA) 2 (bpp) 4] n (1, H4OA = 3,3 ’, 4,4’-oxidiphthalic acid, propane, has been hydrothermally synthesized. The crystal structure is of monoclinic space group P21 / c with a = 11.544 (3), b = 16.129 (4), c = 21.181 V = 3897.0 (2) 3, C84O18N8H70Cu3, Mr = 1670.13, Z = 2, Dc = 1.423 g / cm3 F (000) = 1722, μ = 0.887 mm-1, R = 0.0878 and wR = 0.2583 for 8496 observed single-crystal X-ray structural analysis reveals that 1 is a three-dimensional (3D) framework based on a two-dimensional (2D) mesomeric layer of alternating left- and right-handed helical chains. The monodentate terminal and bidentate bridging bpp ligands in the same conformation are all encapsulated in the figure-of-eight-shaped channels, thereby further stabilizing the whole three-dimen-sional framework.