Phosphor(II)-fluorid

Strukturformel
Struktur von Phosphor(II)-fluorid
Allgemeines
Name Phosphor(II)-fluorid
Andere Namen
  • Diphosphortetrafluorid
  • Tetrafluordiphosphan
  • Tetrafluordiphosphin
Summenformel P2F4
Kurzbeschreibung

farbloses Gas[1]

Externe Identifikatoren/Datenbanken
CAS-Nummer 13824-74-3
PubChem 139615
Wikidata Q2088767
Eigenschaften
Molare Masse 137,94 g·mol−1
Aggregatzustand

gasförmig

Schmelzpunkt

−86,5 °C[1]

Siedepunkt

−6,2 °C[1]

Sicherheitshinweise
GHS-Gefahrstoffkennzeichnung
keine Einstufung verfügbar[2]
Soweit möglich und gebräuchlich, werden SI-Einheiten verwendet.
Wenn nicht anders vermerkt, gelten die angegebenen Daten bei Standardbedingungen (0 °C, 1000 hPa).

Phosphor(II)-fluorid ist eine chemische Verbindung mit der Summenformel P2F4. Die zwei Phosphoratome in der Oxidationsstufe +2 sind über eine Einfachbindung miteinander verbunden. Jedes Phosphoratom besitzt des Weiteren zwei Bindungen zu Fluoratomen.

Darstellung

Phosphor(II)-fluorid kann durch die Reaktion von Phosphordifluoridiodid mit elementarem Quecksilber hergestellt werden.[1] Hierbei fällt Quecksilber(I)-iodid aus.

Verwendung

Die Verbindung kann zur Synthese von Difluorphosphanen eingesetzt werden. So addiert sich Phosphor(II)-fluorid in einer Gasphasenreaktion durch UV-Bestrahlung an die Dreifachbindung von Alkinen.[3]

Addition von Phosphor(II)-fluorid an ein Alkin

Einzelnachweise

  1. ↑ a b c d A. F. Holleman, E. Wiberg, N. Wiberg: Lehrbuch der Anorganischen Chemie. 101. Auflage. Walter de Gruyter, Berlin 1995, ISBN 3-11-012641-9.
  2. ↑ Dieser Stoff wurde in Bezug auf seine Gefährlichkeit entweder noch nicht eingestuft oder eine verlässliche und zitierfähige Quelle hierzu wurde noch nicht gefunden.
  3. ↑ J. G. Morse, J. J. Mielcarek: Photoreactions of tetrafluorodiphosphine with alkynes. In: Journal of Fluorine Chemistry. 1988, Nr. 40, S. 41–49. doi:10.1016/S0022-1139(00)81060-X.

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