trans-bis(saccharinato)zinc and -cadmium complexes with N-(2-aminoethyl)piperazine: Synthesis, crystal structures and IR spectra

V T Yilmaz, S Guney, W T A Harrison

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Abstract

The reactions of N-(2-aminoethyl)piperazine (aeppz) with tetraaqua-bis(saccharinato)zinc(II) and -cadmium(II) in ethanol solution yield the new complexes trans- [Zn(sac)(2) (aeppz)(2)] (1), and trans[Cd(sac)(2)(aeppz)(2)] (2) (sac = saccharinate), respectively. The complexes were characterized by elemental analyses, IR spectroscopy and X-ray crystallography. Both complexes 1 and 2 are mononuclear of C-i symmetry. The zinc(II) and cadmium(II) ions are coordinated by two neutral aeppz ligands and two sac anions in an elongated distorted octahedral environment. The aeppz ligand acts as a bidentate N, N' donor through the central heterocyclic N atom and the N atom of the aminoethyl group, while the sac ligand is O-coordinated via the carbonyl 0 atom. The packing of the molecules in the crystals in both complexes is consolidated by arene pi-pi stacking interactions between the sac rings and by intermolecular hydrogen bonds involving the amine groups of aeppz and the sulfonyl oxygen atoms of the sac ligands.

Original languageEnglish
Pages (from-to)403-407
Number of pages5
JournalZeitschrift für Naturforschung. B, Journal of Chemical Sciences
Volume60
Publication statusPublished - 2005

Keywords

  • N-(2-aminoethyl)piperazine
  • saccharinate
  • zinc(II)
  • cadmium(II)
  • crystal structure
  • DIFFERENT COORDINATION MODES
  • BRIDGING SACCHARINATE
  • LEAD(II)
  • 2-PYRIDYLMETHANOL
  • MONOHYDRATE
  • LIGANDS
  • POLYMER

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