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Syntheses and crystal structures of two tetranuclear copper(II) complexes with Schiff bases

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Two similar tetranuclear copper(II) complexes with the formulae [Cu4(L1)21,1-N3)42-CH3COO)2] and [Cu4(L2)21,1-N3)2(μ-Br)2Br2(CH3OH)2], where L1 and L2 are the deprotonated forms of 2-[(2-ethylaminoethylimino)methyl]-5-methoxyphenol and 5-methoxy-2-[(2-piperidin-1-ylethylimino)methyl]phenol, respectively, have been synthesized and characterized by spectroscopic methods and single-crystal X-ray diffraction. Both complexes are centrosymmetric tetranuclear copper(II) compounds. The bridging groups in [Cu4(L1)21,1-N3)42-CH3COO)2] are μ1,1-azide ligands and μ2-acetate ligands, and those in [Cu4(L2)21,1-N3)2(μ-Br)2Br2(CH3OH)2] are μ1,1-azide ligands and μ-bromide ligands. Each Cu atom in the complexes is in a square pyramidal geometry.

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This work was financially supported by the Education Office of Liaoning Province (project No. 2007T092).

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Correspondence to Zhong-Lu You.

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Zhang, N., You, Z. Syntheses and crystal structures of two tetranuclear copper(II) complexes with Schiff bases. Transition Met Chem 35, 437–440 (2010). https://doi.org/10.1007/s11243-010-9346-1

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  • CH3OH
  • Schiff Base
  • Azide Group
  • Pyramidal Geometry
  • Metal Azide