Monatshefte für Chemie - Chemical Monthly

, Volume 143, Issue 2, pp 175–180 | Cite as

Hydroxylammonium fluorometalate: synthesis and characterisation of a new fluorozincate

  • Brina Dojer
  • Amalija Golobič
  • Zvonko Jagličić
  • Matjaž Kristl
  • Miha Drofenik
Original Paper

Abstract

A new coordination compound of zinc fluoride and hydroxylammonium, (NH3OH)2ZnF4, was obtained after dissolving zinc powder in hydrofluoric acid (40%) and adding solid hydroxylammonium fluoride. The colourless crystals were characterised chemically, magnetically, structurally by single-crystal X-ray diffraction analysis, and thermogravimetrically by TGA and DSC analysis. The structure consists of NH3OH+ cations and ZnF6 octahedra in which the metal ion lies on the inversion centre. Each of the ZnF6 octahedra shares four of its vertices in a way that each vertex is shared between two octahedra. Oxygen and nitrogen atoms of hydroxylammonium cations are donors of hydrogen bonds. Hydroxylamonium fluorozincate crystallizes monoclinic, P21/c, with cell parameters a = 8.1604(4) Å, b = 5.8406(3) Å, c = 5.6586(2) Å and β = 94.745(3)°. The compound decomposes above 373 K in four steps, obtaining ZnO as the final residue. Magnetic properties of the compound were studied between 2 and 300 K, giving the prevailing diamagnetic behaviour with room temperature susceptibility of −9 × 10−5 emu mol−1.

Graphical Abstract

Keywords

Hydroxylammonium fluorozincate Crystal structure Hydrogen bonds X-ray structure determination Thermochemistry 

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Copyright information

© Springer-Verlag 2011

Authors and Affiliations

  • Brina Dojer
    • 1
  • Amalija Golobič
    • 2
  • Zvonko Jagličić
    • 3
    • 4
  • Matjaž Kristl
    • 1
  • Miha Drofenik
    • 1
    • 5
  1. 1.Faculty of Chemistry and Chemical EngineeringUniversity of MariborMariborSlovenia
  2. 2.Faculty of Chemistry and Chemical TechnologyUniversity of LjubljanaLjubljanaSlovenia
  3. 3.Institute of Mathematics, Physics and MechanicsLjubljanaSlovenia
  4. 4.Faculty of Civil and Geodetic EngineeringLjubljanaSlovenia
  5. 5.Jozef Stefan InstituteLjubljanaSlovenia

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