Chemistry:Pivalonitrile

Pivalonitrile

Names
Preferred IUPAC name 2,2-Dimethylpropanenitrile
Other names tert-Butyl cyanide tert-Cyanobutane 2-Cyano-2-methylpropane Trimethylacetonitrile tert-Butylnitrile
Identifiers
CAS Number	630-18-2 Y
3D model (JSmol)	Interactive image
Beilstein Reference	1361449
ChemSpider	11909 Y
EC Number	211-133-0
PubChem CID	12416
UNII	AQD7ZXJ3PR Y
UN number	3273
InChI InChI=1S/C5H9N/c1-5(2,3)4-6/h1-3H3 Y Key: JAMNHZBIQDNHMM-UHFFFAOYSA-N Y
SMILES CC(C)(C)C#N
Properties
Chemical formula	C5H9N
Molar mass	83.134 g·mol−1
Appearance	Colourless liquid
Density	752 mg mL−1
Melting point	15 °C (59 °F; 288 K)
Boiling point	106 °C (223 °F; 379 K)
Refractive index (nD)	1.3774
Thermochemistry
Heat capacity (C)	179.37 J K−1 mol−1
Std molar entropy (So298)	232.00 J K−1 mol−1
Std enthalpy of formation (ΔfH⦵298)	−39.9 kJ mol−1
Std enthalpy of combustion (ΔcH⦵298)	−3.2146–−3.2132 MJ mol−1
Hazards
GHS pictograms
GHS Signal word	DANGER
GHS hazard statements	H225, H301, H311, H331
GHS precautionary statements	P210, P261, P280, P301+310, P311
Flash point	4 °C (39 °F; 277 K)
Related compounds
Related alkanenitriles	Acetonitrile Aminoacetonitrile Glycolonitrile Cyanogen Propanenitrile Aminopropionitrile Malononitrile Acetone cyanohydrin Butyronitrile Succinonitrile Tetramethylsuccinonitrile
Related compounds	DBNPA
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

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Pivalonitrile is a nitrile with the semi-structural formula (CH₃)₃CCN, abbreviated t-BuCN. This aliphatic organic compound is a clear, colourless liquid that is used as a solvent and as a labile ligand in coordination chemistry. Pivalonitrile is isomeric with tert-butyl isocyanide but the two compounds do not exist in chemical equilibrium, unlike its silicon analog trimethylsilyl cyanide.