Divalent nickel and monovalent copper pseudohalide coordination polymers incorporating the kinked organodiimine 4,4′-dipyridylamine: From a (4,4)-type lamellar motif to an unprecedented staircase morphology

Warren R. Knapp, Justin G. Thomas, David P. Martin, Maxwell A. Braverman, Ryan J. Trovitch, Robert L. LaDuca

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The divalent nickel isothiocyanate coordination polymer [Ni(NCS) 2(dpa)2] (1) has been prepared in high yield via the hydrothermal combination of Ni(SCN)2 with the kinked tethering ligand 4,4′-dipyridylamine (dpa), and characterized via single crystal X-ray diffraction, infrared spectroscopy and elemental and thermal analysis. 1 manifests offset stacked 2-D (4,4)-topology layered motifs organized into 3-D via interlamellar supramolecular N-H⋯S hydrogen bonding. Hydrothermal reaction of CuCl2·2H2O, NaSCN, and dpa afforded the copper (1) thiocyanate coordination polymer [Cu2(SCN) 2(dpa)] (2), whose single crystal structure revealed unprecedented 1-D [Cu2(SCN)2] zig-zag staircase motifs constructed via connection of the Cu2S2 "stair steps" at their adjacent sides via μ3-1,1,3-SCN anions. The 3-D structure of 2 is propagated by covalent linkage of each [Cu2(SCN)2] staircase to four others through dipodal dpa tethering ligands, enhanced by N-H⋯S and C-H⋯S supramolecular interactions to two other staircases.

Original languageEnglish
Pages (from-to)575-581
Number of pages7
JournalZeitschrift fur Anorganische und Allgemeine Chemie
Issue number4
Publication statusPublished - Apr 2 2007



  • Coordination polymer
  • Copper
  • Crystal structure
  • Hydrothermal synthesis
  • Isothiocyanate
  • Nickel
  • Thermogravimetric analysis
  • Thiocyanate

ASJC Scopus subject areas

  • Inorganic Chemistry

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