Structure and Chromotropic Properties of 2-Picolylamine-Ni(II) Complex

Document Type : Research Paper

Authors

Department of Chemistry, University of Mazandaran, Babolsar, Iran

Abstract

A symmetric complex [NiL2(H2O)2]Cl2, where L = 2-picolylamine was synthesized and characterized by spectroscopic and structural methods. Single crystal X-ray studies reveal that the Ni(II) center located in a pseudo-octahedral N4O2 environment with bidentate ligands L positioned in basal and two water molecules in the apical position. The complex is solvatochromic, ionochromic and thermochromic. The observed positive solvatochromism in polar solvents is due to the substitution of water molecules by the solvent. The complex demonstrated distinct ionochromism towards cyanide and bromide anions in the presence of other halides and pseudo-halide anions and can be served as a ‘‘naked-eye’’ indicator for the qualitative detection of these anions. The compound showed reversible thermochromism in solid-state from blue to green due to dehydration and hydration process.

Keywords

References

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Inorganic Chemistry Research
Volume 4, Issue 1
Spring and Summer
2020
Pages 76-85

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History

  • Receive Date: 01 June 2020
  • Revise Date: 01 July 2020
  • Accept Date: 16 July 2020

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