Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
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Synthesis, Characterization and Property Studies on a Dinuclear Copper(II) Complex with Dipyridine Derivate and Acetylacetone

  • Zhao, Pu Su (New Materials & Function Coordination Chemistry Laboratory, Qingdao University of Science and Technology) ;
  • Guo, Zhi Yan (New Materials & Function Coordination Chemistry Laboratory, Qingdao University of Science and Technology) ;
  • Sui, Jing (New Materials & Function Coordination Chemistry Laboratory, Qingdao University of Science and Technology) ;
  • Wang, Jing (New Materials & Function Coordination Chemistry Laboratory, Qingdao University of Science and Technology) ;
  • Jian, Fang Fang (New Materials & Function Coordination Chemistry Laboratory, Qingdao University of Science and Technology)
  • Received : 2010.08.10
  • Accepted : 2010.09.30
  • Published : 2011.01.20
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Abstract

A dinuclear copper(II) complex of [$Cu_2(aceace)_4$(dipyph)] [aceace = acetylacetone, dipyph = 1,4-di(4-pyridylethene-2-yl-)benzene] has been synthesized and characterized by elemental analysis, IR and X-ray single crystal diffraction. It crystallizes in the monoclinic system, space group P21/c, with lattice parameters a = 7.9584(16) $\AA$, b = 18.594(4) $\AA$, c = 15.063(4) $\AA$ $\beta=120.97(2)^o$ and $M_r$ = 807.85 ($C_{40}H_{44}Cu_2N_2O_8$), Z = 2. Each of the $Cu^{2+}$ ion adopts a square pyramid geometry and coordinates with four oxygen atoms from two aceace ligands and one nitrogen atom from dipyph bidentate ligand. Magnetic measurement shows that the Weiss constant and Curie constant for the title compound are -0.22 K and 0.1154 emu K/mol, respectively. Thermal stability data indicate that the title complex undergoes two steps decomposition and the residue is $Cu_2O_4$. In the potential range of -1.5 ~ 0.8 V, the title complex represents an irreversible electrochemical process.

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References

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