Phosphorus tricyanide

Phosphorus tricyanide is an inorganic compound with the chemical formula P(CN)₃. It can be produced by the reaction of phosphorus trichloride and trimethyl(iso)cyanosilane.^{[2][clarification needed]} The reaction of phosphorus tribromide and silver cyanide in diethyl ether produce phosphorus tricyanide too.^[1]

PBr₃ + 3 AgCN → P(CN)₃ + 3 AgBr

Phosphorus tricyanide

Names
Other names Phosphorus(III) cyanide Tricyanophosphine
Identifiers
CAS Number	1116-01-4 Y
3D model (JSmol)	Interactive image
ChemSpider	120617
PubChem CID	136869
CompTox Dashboard (EPA)	DTXSID30149693
InChI InChI=1S/C3N3P/c4-1-7(2-5)3-6 Key: VXFKMOLPHLQGLH-UHFFFAOYSA-N
SMILES N#CP(C#N)C#N
Properties
Chemical formula	P(CN)3
Molar mass	109.028 g·mol−1
Appearance	white crystals
Boiling point	190 °C (374 °F; 463 K) sublimes[1]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Its thermal decomposition can produce graphite phase C₃N₃P.^[3]

Phosphorus tricyanide reacts with [Re(CO)₅]⁺[BF₄]⁻ to form {P[CN-Re(CO)₅]₃}[BF₄]₃.^[4]