Diphosphorus tetraiodide

Diphosphorus tetraiodide
Ball-and-stick model of the diphosphorus tetraiodide molecule
Names
IUPAC name
Diphosphorus tetraiodide
Preferred IUPAC name
Tetraiododiphosphane
Other names
Phosphorus(II) iodide
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.033.301 Edit this at Wikidata
EC Number
  • 236-646-7
  • InChI=1S/I4P2/c1-5(2)6(3)4
    Key: YXXQTQYRRHHWFL-UHFFFAOYSA-N
  • P(P(I)I)(I)I
Properties
P2I4
Molar mass 569.57 g/mol
Appearance Orange crystalline solid
Melting point 125.5 °C (257.9 °F; 398.6 K)
Boiling point Decomposes
Decomposes
Hazards
GHS labelling:
GHS05: Corrosive
Danger
H314
P260, P264, P280, P301+P330+P331, P303+P361+P353, P304+P340, P305+P351+P338, P310, P321, P363, P405, P501
Flash point Non-flammable
Related compounds
Other anions
Diphosphorus tetrafluoride
Diphosphorus tetrachloride
Diphosphorus tetrabromide
Other cations
diarsenic tetraiodide
Related Binary Phosphorus halides
phosphorus triiodide
Related compounds
diphosphane
diphosphines
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Diphosphorus tetraiodide is an orange crystalline solid with the formula P2I4. It has been used as a reducing agent in organic chemistry. It is a rare example of a compound with phosphorus in the +2 oxidation state, and can be classified as a subhalide of phosphorus. It is the most stable of the diphosphorus tetrahalides.[1]

  1. ^ Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. ISBN 978-0-08-037941-8.