Diphosphorus

Diphosphorus
Stick model of diphosphorus
Stick model of diphosphorus
Spacefill model of diphosphorus
Spacefill model of diphosphorus
Names
IUPAC name
Diphosphorus
Systematic IUPAC name
Diphosphyne[1]
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
1400241
  • InChI=1S/P2/c1-2 checkY
    Key: FOBPTJZYDGNHLR-UHFFFAOYSA-N checkY
  • InChI=1/P2/c1-2
    Key: FOBPTJZYDGNHLR-UHFFFAOYAU
  • P#P
Properties
P2
Molar mass 61.947523996 g·mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
checkY verify (what is checkY☒N ?)

Diphosphorus is an inorganic chemical with the chemical formula P
2
. Unlike nitrogen, its lighter pnictogen neighbor which forms a stable N2 molecule with a nitrogen to nitrogen triple bond, phosphorus prefers a tetrahedral form P4 because P-P pi-bonds are high in energy. Diphosphorus is, therefore, very reactive with a bond-dissociation energy (117 kcal/mol or 490 kJ/mol) half that of dinitrogen. The bond distance has been measured at 1.8934 Å.[2]

  1. ^ Cite error: The named reference EBI was invoked but never defined (see the help page).
  2. ^ Cite error: The named reference Herzberg was invoked but never defined (see the help page).