Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
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Extended Bifurcated Hydrogen Bonds Network Material of Copper(II) Complexes with 2-Dimethylaminomethyl-3-hydroxypyridine: Structures and Magnetic Properties

  • Kang, Sung-Kwon (Department of Chemistry, Chungnam National University) ;
  • Lee, Hong-Woo (Department of Chemistry, Pusan National University) ;
  • Sengottuvelan, Nallathambi (Department of Chemistry Education and Interdisciplinary Program of Advanced Information and Display Materials, Pusan National University) ;
  • Kim, Young-Inn (Department of Chemistry Education and Interdisciplinary Program of Advanced Information and Display Materials, Pusan National University)
  • Received : 2011.10.14
  • Accepted : 2011.11.05
  • Published : 2012.01.20
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Abstract

Two novel copper(II) complexes, [Cu(dmamhp)$(H_2O)_2(SO_4)]_n$ (1) and [Cu(dmamhp)$(NO_3)_2(H_2O)]{\cdot}H_2O$ (2) [dmamhp = 2-dimethylaminomethyl-3-hydroxypyridine] have been synthesized and structurally characterized by single crystal X-ray diffraction analysis. Compound 1 displays a double one-dimensional chains structure, in which each chain is constituted with the distorted octahedral copper(II) complex bridged through bidentate sulfate ligands resulting in a coordination polymer. The bifurcated hydrogen bonds and $\pi-\pi$ interactions play important roles in the formation of the double chains structure. On the other hand, compound 2 adopts a distorted square pyramidal geometry around copper(II) ion and exists as a discrete monomer. There are intermolecular bifurcated hydrogen bonds and $\pi-\pi$ stacking interactions between the monomeric units. The magnetic properties revealed that the paramagnetic behaviors are dominantly manifested and there are no intermolecular magnetic interactions in both compound 1 and 2.

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