Niobium iodide (NbI4) (6CI,7CI,8CI,9CI)

Niobium iodide (NbI4) (6CI,7CI,8CI,9CI) Chemische Eigenschaften,Einsatz,Produktion Methoden

• Chemische Eigenschaften

  dark-gray crystalline oblong leaflets or thin needles; metallic luster. Soluble in H2O and dilute hydrochloric acid.

• Synthese

  A tube, dried by fanning with a flame and prepared for evacuation and melt-sealing, is charged with a small amount of Nbl5 under completely anhydrous conditions. The tube is then sealed in a high vacuum and the end containing Nbl5 is heated to 270°Cwhile the reactor is in a horizontal position. The liberated iodine collects at the other end, which is kept at a temperature of about 35°C (p[I₂] = 0.8 mm.). The reaction time is about 48 hours. A residue of Nbl4 remains on the spot where the starting Nbl₅ was placed; it can be sublimed at about 300 °C under the above-indicated I₂ pressure.
  Nbl₅= Nbl₄ + ¹/₂ I₂.
  

Niobium iodide (NbI4) (6CI,7CI,8CI,9CI) Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

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