Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
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Template Synthesis, Crystal Structure, and Magnetic Properties of a Dinuclear Copper(II) Complex with Cooperative Hydrogen Bonding

  • Kang, Shin-Geol (Department of Chemistry, Daegu University) ;
  • Nam, Kwang-Hee (Department of Chemistry, Daegu University) ;
  • Min, Kil-Sik (Department of Chemistry Education, Kyungpook National University) ;
  • Lee, Uk (Department of Chemistry, Pukyong National University)
  • Received : 2010.11.22
  • Accepted : 2010.12.23
  • Published : 2011.03.20
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Abstract

The dinuclear complex 1 with cooperative hydrogen bonds can be prepared by the metal-directed reaction of Eq. (2). This work shows that the coordinated hydroxyl group trans to the secondary amino group is deprotonated more readily than that trans to the tertiary amino group and acts as the hydrogen-bond accepter. The lattice water molecules in 1 act as bridges between the two mononuclear units through hydrogen bonds. The complex is quite stable as the dimeric form even in various polar solvents. The complex exhibits a weak antiferromagnetic interaction between the metal ions in spite of relatively long Cu$\cdots$Cu distance. This strongly supports the suggestion that the antiferromagnetic behavior is closely related to the cooperative hydrogen bonds.

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References

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