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・ Bis(chloromethyl) ether
・ Bis(chloromethyl) ketone
・ Bis(chloromethyl)benzene
・ Bis(cyclooctadiene)nickel(0)
・ Bis(cyclooctatetraene)iron
・ Bis(dicyclohexylphosphino)ethane
・ Bis(dinitrogen)bis(1,2-bis(diphenylphosphino)ethane)molybdenum(0)
・ Bis(pinacolato)diboron
・ Bis(pyridine)iodonium(I) tetrafluoroborate
・ Bis(triethoxysilylpropyl)tetrasulfide
・ Bis(trimethylsilyl)acetamide
・ Bis(trimethylsilyl)acetylene
・ Bis(trimethylsilyl)amine
・ Bis(trimethylsilyl)mercury
・ Bis(trimethylsilyl)sulfide
Bis(triphenylphosphine)iminium chloride
・ Bis(triphenylphosphine)nickel chloride
・ Bis(triphenylphosphine)palladium(II) dichloride
・ Bis(triphenylphosphine)platinum chloride
・ Bis-(2,4,5-trichloro-6-(pentyloxycarbonyl)phenyl)oxalate
・ Bis-choline tetrathiomolybdate
・ Bis-gamma-glutamylcystine reductase
・ Bis-HPPP
・ Bis-peptide
・ Bis-quits
・ Bis-TOM
・ Bis-tris methane
・ Bis-tris propane
・ Bisa
・ Bisa Grant


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Bis(triphenylphosphine)iminium chloride : ウィキペディア英語版
Bis(triphenylphosphine)iminium chloride

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Bis(triphenylphosphine)iminium chloride is the chemical compound with the formula ()Cl, often written ()Cl and abbreviated PPNCl. This colorless salt is a source of the PPN+ cation, which is used to isolate reactive anions. PPN+ is a phosphazene.
==Synthesis and structure==
PPNCl is prepared in two steps from triphenylphosphine:
:Ph3P + Cl2 → Ph3PCl2
This triphenylphosphine dichloride is related to phosphorus pentachloride. Treatment of this species with hydroxylamine in the presence of Ph3P results in replacement of the P-Cl bonds by P=N bonds:
:2 Ph3PCl2 + NH2OH·HCl + Ph3P → Cl + 4HCl + Ph3PO
In PPN+ salts, P-N bond lengths are equivalent, 1.58 Å. The cation is bent at the central nitrogen, and has no inversion centre. Its connectivity is indicated by Ph3P=N=PPh3+.


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