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diphosphene
Sign in to saveDiphosphene is a compound having the formula . It exists as two geometric isomers, E and Z. Diphosphene is also the parent member of the entire class of diphosphene compounds with the formula , where R is an organyl group.
Chemical data
- Formula
- H2P2
- Molecular weight
- 63.963 g/mol
- IUPAC name
- phosphanylidenephosphane
- SMILES
- P=P
- InChIKey
- SWJAOBXRZSMKNS-UHFFFAOYSA-N
- XLogP
- -0.2
- Polar surface area
- 0 Ų
- H-bond donors
- 0
- H-bond acceptors
- 0
- Formal charge
- 0
via PubChem
Wikidata facts
- Subclass of
- chemical compound
- Has part
- phosphorus
- Mass
- 63.963173
Show 3 more facts
- canonical SMILES
- P=P
- chemical formula
- H₂P₂
- isomeric SMILES
- [H]/P=P/[H]
Sources (2)
via Wikidata · CC0
~1 min read
Encyclopedic overview
1 sectionsContents
- References
Diphosphene is a compound having the formula . It exists as two geometric isomers, E and Z. Diphosphene is also the parent member of the entire class of diphosphene compounds with the formula , where R is an organyl group.
Visible radiation induces cis-trans isomerization, although further irradiation can excite the molecule to a triplet diradical state. In triplet trans-HPPH, the P-P bond length is predicted to be 2.291 Å. It is not only longer than the P-P double bond in ground state trans-bis(2,4,6-tri-tert-butylphenyl)diphosphene, but also longer than that of P-P single bond in . Calculation of the dihedral angle of trans-HPPH suggests that it is almost 90 degree, which means the formation of \pi and \pi^* P-P bonds is forbidden and σ bond is enhanced.
Excerpted from Wikipedia’s “diphosphene” article, available under the CC BY-SA 4.0 licence.