Synthesis and Crystal Structure of a New Copper(II) Coordination Polymer [CuC₁₆ H₁₈ N₄O₄S]_n*

Abstract:

A new one-dimensional [CuC₁₆ H₁₈ N₄O₄S]n(1) was synthesized by the self-assembly of a ligand 2,5-thiophenediformates, 3,5-dimethylpyrazole and copper(II), and characterized by elemental analysis, IR and single-crystal X-ray diffraction. 1 crystallizes in monoclinic, space group C2/c with unit cell parameters, a=18.6156(4), b=5.96110(10), c= 18.1598(4)Å, =115.467(2)°, Z=4, V=1819.37(7)Å3, Mr = 425.94, Dc = 1.555g/cm3, μ=1.345mm-1, and F(000)= 876. The final R and wR are 0.0328 and 0.0816 for 7611 observed reflections with I>2σ(I). 1 shows an infinite 1-D polymeric chain structure based on the repeated basic units Cu(II)(3,5-dimethylpyrazole)2(2,5-thiophene diformate). The Cu(II)center acts as the joint of the unit, and is coordinated in a slightly distorted octahedral geometry comprised of four O atoms from two different 2,5-thiophenediformate ligands and two N atoms of two trans 3,5-dimethylpyrazole ligands.

• Periodical: Advanced Materials Research (Volumes 554-556)
• Pages: 268-272
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.554-556.268
• Online since: July 2012
• Authors: Jia Gui Li, Wan Ren Zhu, Shu Hong Ding, Yuan Chen, Yu Lin Zhu, Zhao Yu Huang
• Keywords: Coordination Polymer, Copper(II), Crystal Structure

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