Diphosphane

Diphosphane adopts the gauche conformation (like hydrazine, less symmetrical than shown in the image) with a P−P distance of 2.219 angstroms.According to an optimized procedure, hydrolysis of 400 g of CaP at −30 °C gives about 20 g of product, slightly contaminated with phosphine.Reaction of diphosphane with butyllithium affords a variety of condensed polyphosphine compounds.Otherwise, the substituents facily redistribute on the phosphorus centers to give a mixture of products.Symmetric diphosphanes are easily prepared by reductive coupling, e.g. tetraphenyldiphosphine from chlorodiphenylphosphine: Ultraviolet radiation decomposes mercury(II) dialkylphosphides to the metal and a dialkylphosphane.
Stereo structural formula of diphosphane with explicit hydrogens
Stereo structural formula of diphosphane with explicit hydrogens
Ball-and-stick model of diphosphane
Ball-and-stick model of diphosphane
diphosphinesIUPAC nameCAS NumberChemSpiderPubChemCompTox DashboardSMILESChemical formulaMolar massMelting pointBoiling pointanionsammoniahydrazinetriazanecationsPhosphorus halidesdiphosphorus tetrafluoridediphosphorus tetrachloridediphosphorus tetraiodidephosphanetriphosphanediphosphenediphosphenesstandard stateinorganic compoundphosphinegauche conformationangstromsspontaneously flammable in aircalcium monophosphidebutyllithiumchiral inversionphosphidetetraphenyldiphosphinechlorodiphenylphosphinemercury(II)thiophosphoryl chloridePnictogen hydrideChem. Rev.Binary compounds of hydrogenGroup 13 hydridesBoranesB10H14B18H22NihonanesGroup 14 hydridesHydrocarbonsalkanesalkenesalkynesCycloalkanesCycloalkenesCycloalkynesAnnulenesSilanesSi4H10Si5H12Si6H14more...SilenesStannanesFlerovanesPnictogen (Group 15) hydridesAzanesAzenesPhosphenesArsanesHydrogen chalcogenides (Group 16 hydrides)PolyoxidanesPolysulfanesSelanesHydrogen halides (Group 17 hydrides)Transition metal hydridesPdHx (x < 1)Exotic matter hydrides