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.
Wikidata facts
- Mass
- 63.963173
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- canonical SMILES
- P=P
- chemical formula
- H₂P₂
- isomeric SMILES
- [H]/P=P/[H]
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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.