Chemical Properties of Cyanogen (CAS 460-19-5)

Cyanogen

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InChI
InChI=1S/C2N2/c3-1-2-4
InChI Key
JMANVNJQNLATNU-UHFFFAOYSA-N
Formula
C2N2
SMILES
N#CC#N
Molecular Weight1
52.03
CAS
460-19-5
Other Names
  • (CN)2
  • Carbon nitride
  • Carbon nitride (C2N2)
  • Cyanogen (C2N2)
  • Cyanogen gas
  • Cyanogene
  • Dicyan
  • Dicyanogen
  • Ethanedinitrile
  • NCCN
  • Nitriloacetonitrile
  • Oxalic acid dinitrile
  • Oxalic nitrile
  • Oxalonitrile
  • Oxalyl cyanide
  • Prussite
  • Rcra waste number P031
  • UN 1026
Sources

Physical Properties

Property Value Unit Source
PAff 674.70 kJ/mol NIST
BasG [621.70; 645.80] kJ/mol Show Hide
BasG 645.80 kJ/mol NIST
BasG 622.80 kJ/mol NIST
BasG 621.70 kJ/mol NIST
BasG 642.00 kJ/mol NIST
Δcgas -1096.00 ± 1.80 kJ/mol NIST
Δcgas -1051.90 ± 5.00 kJ/mol NIST
Δcgas -1093.70 ± 0.84 kJ/mol NIST
Δf 232.32 kJ/mol Joback Calculated Property
Δfgas 308.90 ± 1.80 kJ/mol NIST
Δfgas 263.00 kJ/mol NIST
Δfgas 306.70 ± 0.84 kJ/mol NIST
Δfus 3.95 kJ/mol Joback Calculated Property
Δvap 20.80 kJ/mol NIST
IE [13.36; 13.51] eV Show Hide
IE 13.37 ± 0.01 eV NIST
IE 13.50 ± 0.30 eV NIST
IE 13.36 ± 0.01 eV NIST
IE 13.37 ± 0.01 eV NIST
IE 13.50 eV NIST
IE 13.51 eV NIST
logPoct/wat 0.03 Crippen Calculated Property
Pc 4691.31 kPa Joback Calculated Property
Ptriple 75.10 ± 1.33 kPa NIST
liquid 138.83 J/mol×K NIST
Tboil 252.00 K NIST
Tboil 252.00 K NIST
Tc 670.74 K Joback Calculated Property
Tfus 242.28 K Joback Calculated Property
Ttriple 245.32 ± 0.02 K NIST
Vc 0.20 m3/kg-mol Joback Calculated Property

Temperature Dependent Properties

Property Value Unit Temperature (K) Source
Cp,gas 58.91 J/mol×K 449.32 Joback Calculated Property
Cp,liquid 105.73 J/mol×K 255.0 NIST
ΔfusH 8.11 kJ/mol 245.3 NIST
ΔfusH 8.11 kJ/mol 245.32 NIST
ΔsubH [32.40; 34.40] kJ/mol [203.50; 223.50] Show Hide
ΔsubH 33.60 kJ/mol 203.5 NIST
ΔsubH 32.40 kJ/mol 219.0 NIST
ΔsubH 33.00 kJ/mol 220.5 NIST
ΔsubH 34.40 kJ/mol 223.5 NIST
ΔvapH [23.30; 24.50] kJ/mol [246.50; 259.50] Show Hide
Plot of Enthalpy of vaporization at a given temperature.
ΔvapH 24.50 kJ/mol 246.5 NIST
ΔvapH 23.30 ± 0.20 kJ/mol 251.95 NIST
ΔvapH 23.33 kJ/mol 252.0 NIST
ΔvapH 23.33 kJ/mol 252.0 NIST
ΔvapH 23.90 kJ/mol 259.5 NIST
ΔvapH 23.50 kJ/mol 259.5 NIST
ΔfusS 33.05 J/mol×K 245.32 NIST
ΔvapS 92.58 J/mol×K 252.0 NIST

Molecular Descriptors

Joback and Reid Groups
-CN 2

Similar Compounds

Methylidyne, cyano-. Acetonitrile. Cyanomethylene. Cyanomethyl radical. 2-Cyanoethyl radical. Propanenitrile. 1-Cyanoethyl radical. Acetonitrile, chloro-. Cyanoethynyl radical. Propiolonitrile. Acetonitrile, bromo-. 2-Propenenitrile. NCCH2NH2. Iodoacetonitrile. Acetonitrile, hydroxy-.

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