Citation: LI Gui-Lian, LIU Guang-Zhen, XIN Ling-Yun, LI Xiao-Ling. Two New Coordination Polymers Containing Metal-carboxylate Helix[J]. Chinese Journal of Structural Chemistry, ;2014, 33(5): 764-770. shu

Two New Coordination Polymers Containing Metal-carboxylate Helix

1.
College of Chemistry and Chemical Engineering, Luoyang Normal University, Luoyang 471022, China

Received Date: 24 October 2013
Available Online: 17 March 2014
Fund Project: Supported by the Foundation for University Young Key Teacher by Henan Province (No. 2011GGJS-153) (No. 2011GGJS-153)

Two novel compounds, {[Cd(nbdc)(bpp)(H₂O)]·H₂O}_n 1 and {[Cd(nbdc)(dpds)(H₂O)]·H₂O}_n 2 (H₂nbdc=4-nitro-1,2-benzenedicarboxylic acid, bpp=1,3-bis(4-pyridyl)propane and dpds=4,4'-dipyridyldisulfide), were solvothermally synthesized and characterized by elemental analysis, IR spectroscopy, thermogravimetric analysis (TGA), fluorescent analysis and single-crystal X-ray diffraction. Complex 1 is of monoclinic system, space group P2₁/c with a=14.4370(17), b=8.4090(10), c=19.168(2)Å, β=104.5050(10)°, V=2252.8(5)Å³, D_c=1.639 g/cm³, M_r=555.81, Z=4, F(000)=1120, μ=1.022 mm^-1, the final R=0.0269 and wR=0.0599 for 16656 observed reflections with I>2σ(I). 2 is isostructural to 1 with a=14.4175(11), b=8.4737(7), c=18.0120(14)Å, β=106.7220(10)°, V=2107.5(3)Å³, D_c=1.821 g/cm³, M_r=577.85, Z=4, F(000)=1152, μ=1.287 mm^-1, the final R=0.0280 and wR=0.0705 for 15136 observed reflections with I>2σ(I). Both complexes present intimately related structures featuring infinite Cd-carboxylate helix of [Cd^Ⅱ (nbdc)(H₂O)]_n connected by bpp (or dpds) molecule to produce the 2D layer frameworks.
- 1,2-benzenedicarboxylate,
- solvothermal,
- helix
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