Citation: CHEN Hui, MA Cheng-Bing, CHEN Chang-Neng. Synthesis and Crystal Structure of a 2D Cu Framework Constructed from Dinuclear Building Units[J]. Chinese Journal of Structural Chemistry, ;2014, 33(12): 1807-1812. doi: 10.14102/j.cnki.0254-5861.2011-0359 shu

Synthesis and Crystal Structure of a 2D Cu Framework Constructed from Dinuclear Building Units

a.
a. State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China;
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b. University of Chinese Academy of Sciences, Beijing 100039, China

Received Date: 29 April 2014
Available Online: 3 July 2014
Fund Project:

A novel 2D Cu coordination polymer [Cu₄(pca)₄(H₂O)₂(DMSO)₂·2DMSO·2H₂O]_n (2, H₂pca=pyrazole-3-carboxylic acid) has been prepared by dissolving a dinuclear Cu complex Cu₂(py)₃(pca)₂(H₂O)·(H₂O) (1) in DMSO solution and structurally characterized by X-ray diffraction. The polymer crystallizes in space group P1, with a=9.538(3), b=9.714(3), c=10.765(3)Å, α=86.492(6), β=84.007(7), γ=82.592(6)°, M_r=1079.04, V=982.4(5)Å³, Z=1, D_c=1.824 g/cm³, μ=2.425 mm^-1 and F(000)=548. The final refinement gave R=0.0785 and wR=0.1940 for 2787 reflections with I>2σ(I). The structure of 2 consists of Cu₄(pca)₄(H₂O)₂(DMSO)₂·2DMSO·2H₂O units, which can be viewed as two dinuclear subunits of Cu₂(pca)₂(H₂O)₂ and Cu₂(pca)₂(DMSO)₂ connected to each other alternately, with solvent DMSO and H₂O molecules around. The framework features a grid-like topology, with the walls of the grids composed of Cu₄(pca)₄ units, and the coordinated solvent molecules trapped in the grids.
- copper,
- coordination polymer,
- crystal structure,
- building block
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